Answer:
r = 12
Step-by-step explanation:
using the formula
d = 2 r
solving for r
r = d/2= 24/2=12
Answer:
It would be 12
Step-by-step explanation:
The radius is (Diameter / 2) which means the radius of 24 is 12.
anemia for the study of jordanian children in exercise 4, the sample mean hemoglobin level was 11.3 g/dl and the sample standard deviation was 1.6 g/dl. a significance test yields a p-value of 0.0016. (a) interpret the p-value in context. (b) what conclusion would you make if a 0.05? a 0.01? justify your answer.
(a) The interpret the p-value in context of 0.0016 indicates that the probability of obtaining a sample mean hemoglobin level of 11.3 g/dl or lower.
(b) The conclusion would make if a 0.05 is rejected because the p-value (0.0016) is less than the significance level.
If using a significance level of 0.01, the null hypothesis would still be rejected because the p-value is less than 0.01.
Anemia Study Results(a) The p-value of 0.0016 indicates that the probability of obtaining a sample mean hemoglobin level of 11.3 g/dl or lower, assuming that the true population mean is 12 g/dl (or higher), is only 0.0016. This suggests that the observed difference between the sample mean and the hypothesized population mean is statistically significant and unlikely to be due to chance alone.
(b) If using a significance level of 0.05, the null hypothesis (that the true population mean is 12 g/dl or higher) would be rejected because the p-value (0.0016) is less than the significance level. Therefore, it can be concluded that the sample provides evidence that the true population mean hemoglobin level is lower than 12 g/dl.
If using a significance level of 0.01, the null hypothesis would still be rejected because the p-value is less than 0.01. In this case, the evidence is even stronger, and the conclusion that the true population mean is lower than 12 g/dl would be even more robust.
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a 10 foot chain weighing 25 lbs hangs from a ceiling. how much work is done in lifting the lower end of the chain to the ceiling so that it's level with the upper end?
A 10 foot chain that weighs 25 pounds is suspended from a ceiling; the work required to raise the chain's lower end to the ceiling and level it with the higher end is 62.5.
The formula for work completed is W = F * d. The force acting on the block in this instance is constant, but the force's direction and the displacement it influences are variable. It could be easier to understand if you think of this as a differential equation. Therefore, the work increases by 2.5/2 for each foot the chain is lifted (y). Consequently, we can format this as follows:
work done:
dw/dy = 2.5y/2
dw = 2.5y/2 * dy
Then integrating both sides gives the equation from we get,
\(\left \{ {{10} \atop {0}} \right. 2.5 (y/2)\\2.5 * \frac{y^{2} }{4} \\\\2.5 * (\frac{10}{4} -0)\)
W = 62.5
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A quadratic function may have one root, two roots, or no______ roots.
Answer:
Step-by-step explanation:
Select all ratios that are in their simplest form.
A 4:23 B 11:17 C 30:23 D 18:26 E 26:13
Classify the numbers as rational or irrational.
6
√2.6
√2+6
Step-by-step explanation:
\( \sqrt 2, \: \sqrt 2. 6 \: \& \: \sqrt 2 + 6\) are irrational and 6 is the only rational number.
Seth wants to buy a helmet as well. A new helmet costs
$46.50. Seth thinks he can work 6 hours on Saturday to
earn enough money to buy the helmet. Is he correct?
What can you weave into your game in order to make it easier to pinpoint a particular audience?
a specific narrative
a secret cheat
a hidden treasure
a helpful wizard
A helpful wizard weaves into your game in order to make it easier to pinpoint a particular audience
Adding a helpful wizard to the game can make it easier to pinpoint a particular audience.
In a game, the inclusion of a helpful wizard character can serve multiple purposes to cater to a specific audience. Firstly, the wizard can provide guidance and assistance throughout the game, offering tips and hints to players who may be new to the genre or need extra help. This feature can make the game more accessible and enjoyable for beginners or casual players who may feel overwhelmed by complex gameplay mechanics.
Additionally, the wizard can act as a mentor or guide within the game's narrative, providing a sense of direction and purpose. This narrative element can attract players who enjoy immersive storytelling and seek a more engaging experience. By weaving a specific narrative around the wizard character, the game can target an audience that appreciates rich storytelling and character development.
Overall, incorporating a helpful wizard character adds an element of accessibility, guidance, and narrative depth to the game, making it more appealing and suitable for a specific audience. It enhances the overall gameplay experience and ensures that players can enjoy the game regardless of their skill level or familiarity with the genre.
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Let f(x) = 4x2 + x + 1 and g(x) = x2 − 2. Find g(f(x)). Show each step of your work.
Answer:
the answer to this question is
\(8x^{2} +2x\)
1. According to the National Institute of Health, about 37% of high school seniors have vaped in the past year. Suppose that a survey contacts an SRS of 400 high school seniors and calculates the sample proportion, p , in this sample who have vaped in the past year. A. What is the mean of the sampling distribution of p ? b. Find the standard deviation of the sampling distribution of p. Round to the nearest thousandth. C. Draw the curve of the sampling distribution of p. D. What is the probability, in an SRS of 400 high school seniors, that between 35% and 40% of them have vaped in the past year? e. If the sample size were 900 rather than 400, how would this change the curve of the sampling distribution p?
The probability that between 35% and 40% of an SRS of 400 high school seniors have vaped in the past year is 0.2643 + 0.2823 = 0.5466, or 54.66%.e) If the sample size were 900 rather than 400,
a) The mean of the sampling distribution of p is equal to the true proportion p, which is 0.37.
b) The standard deviation of the sampling distribution of p is given by:σp=√(pq/n)where p = 0.37, q = 1 - p = 0.63 and n = 400.σp = √(0.37 × 0.63/400) = 0.032 or 0.032 rounded to the nearest thousandth.
c) The curve of the sampling distribution of p is a normal distribution that is approximately symmetric with a mean of 0.37 and a standard deviation of 0.032.
d) The probability that between 35% and 40% of an SRS of 400 high school seniors have vaped in the past year can be found using the normal distribution.
We standardize the values as follows:
z1 = (0.35 - 0.37)/0.032 = -0.625z2 = (0.4 - 0.37)/0.032 = 0.781Using a standard normal distribution table or calculator,
we find the probabilities that z lies between -0.625 and 0.781 to be 0.2643 and 0.2823, respectively.
the curve of the sampling distribution of p would be narrower and more peaked since the standard deviation of the sampling distribution is inversely proportional to the square root of the sample size. The mean of the sampling distribution would remain the same at 0.37.
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The ponderal indexis a measure of the "leanness" of a person. A person who is h inches tall and weighs w pounds has a ponderal index I given by I = a. Compule the ponderal index for a person who is 76 inches tall and weighs 192 pounds: Round to the nearest hundredth. b. What is a man's weight if he is 77 inches tall and has a ponderal index of 11.56 ? Round to the nearest whole number. a. The ponderal index for a person who is 76 inches tall and weighs 192 pounds is (Round to the nearest hundredth as needed.)
The ponderal index cannot be computed without the value of the constant "a" in the formula. Therefore, the ponderal index for a person who is 76 inches tall and weighs 192 pounds cannot be determined.
To compute the ponderal index, we need the formula and the value of the constant "a."
a) The formula for the ponderal index is given as I = a, where I represents the ponderal index and a is a constant. However, the value of the constant "a" is missing in the provided information. Without knowing the value of "a," we cannot compute the ponderal index for a person who is 76 inches tall and weighs 192 pounds.
b) Similarly, without knowing the value of the constant "a," we cannot determine the weight of a man who is 77 inches tall and has a ponderal index of 11.56.
To compute the ponderal index or determine the weight, we need the specific value of the constant "a" in the given formula.
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Explicitly describe each partition on the set {1, 2, 3}. For each partition P, indicate which equivalence
relation R from the previous problem has {1, 2, 3}/R = P.
There are three possible partitions on the set {1, 2, 3}: Partition 1: { {1}, {2}, {3} } This partition corresponds to the equivalence relation R1 from the previous problem. Partition 2: { {1, 2}, {3} } This partition corresponds to the equivalence relation R2 from the previous problem. Partition 3: { {1, 3}, {2} } This partition corresponds to the equivalence relation R3 from the previous problem.
A partition of a set is a collection of disjoint subsets of the set that together cover the entire set. In other words, each element of the set belongs to exactly one of the subsets. For the set {1, 2, 3}, there are five partitions:
- P1 = {{1}, {2}, {3}}
- P2 = {{1, 2}, {3}}
- P3 = {{1, 3}, {2}}
- P4 = {{2, 3}, {1}}
- P5 = {{1, 2, 3}}
Each of these partitions corresponds to a different equivalence relation on the set {1, 2, 3}.
For example, the partition P1 corresponds to the equivalence relation R1 = {(1, 1), (2, 2), (3, 3)}, which is the identity relation. The partition P2 corresponds to the equivalence relation R2 = {(1, 1), (2, 2), (3, 3), (1, 2), (2, 1)}, which relates 1 and 2 to each other but not to 3. The partition P3 corresponds to the equivalence relation R3 = {(1, 1), (2, 2), (3, 3), (1, 3), (3, 1)}, which relates 1 and 3 to each other but not to 2. The partition P4 corresponds to the equivalence relation R4 = {(1, 1), (2, 2), (3, 3), (2, 3), (3, 2)}, which relates 2 and 3 to each other but not to 1.
Finally, the partition P5 corresponds to the equivalence relation R5 = {(1, 1), (2, 2), (3, 3), (1, 2), (2, 1), (1, 3), (3, 1), (2, 3), (3, 2)}, which relates all of the elements to each other.
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Which expression has a value of 16 when n = 5? StartFraction 25 Over n EndFraction 7 30 minus 3 n 7 StartFraction 45 Over n EndFraction n cubed minus 114.
The value of the third expression \(\rm \dfrac{45}{n} + 7\) for n = 5 is 16 which is equivalent to 16.
What is an equivalent?The equivalent is the functions that are in different forms but are equal to the same value.
Given
The expressions are shown below.
\(\rm 1. \ \dfrac{25}{n} + 7\\\\2. \ 30 -3n\\\\3. \ 7+ \dfrac{45}{n}\\\\4. \ n^3 - 114\)
The expression is equivalent to 16 for n = 5.
1. For n = 5, the expression will be
\(\rm \dfrac{25}{n} + 7\\\\ \dfrac{25}{5} + 7\\\\5 + 7 \\12\)
The expression is not equivalent to 16.
2. For n = 5, the expression will be
\(\rm 30 - 3n\\30 - 3 * 5 \\30 - 15\\15\)
The expression is not equivalent to 16.
3. For n = 5, the expression will be
\(\rm \dfrac{45}{n} + 7\\\\ \dfrac{45}{5} + 7\\\\9 + 7 \\16\)
The expression is equivalent to 16.
4. For n = 5, the expression will be
\(\rm n^3 - 114 \\\\5^3 - 114 \\\\125 -114\\\\11\)
The expression is not equivalent to 16.
Thus, the third expression is equivalent to the 16.
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Answer:
The answer is C, \(7+\frac{45}{n}\)
Step-by-step explanation:
1. if n=5 then the expression would be rewritten as \(7 + \frac{45}{5}\)
2. 45 divide 5 is 9.
3. 9 + 7 =16 Therefore, your answer is C.Please Help! Urgent!
Consider the normal distribution shown below. Each unit on the horizontal axis indicates 1 standard deviation. What percentage of scores lie in the shaded region? Use the empirical rule to find your answer.
About 2.5% of the scores lie in the shaded region.
Unfortunately, there is no image provided for the normal distribution. However, I can provide a general explanation of how to use the empirical rule to answer this question.
The empirical rule states that for a normal distribution:
- approximately 68% of the scores fall within one standard deviation of the mean
- approximately 95% of the scores fall within two standard deviations of the mean
- approximately 99.7% of the scores fall within three standard deviations of the mean
Assuming the shaded region is between two points that are two standard deviations away from the mean, we can use the empirical rule to estimate the percentage of scores that fall within that region.
Since two standard deviations on each side of the mean covers approximately 95% of the scores, the shaded region would represent approximately (100% - 95%) / 2 = 2.5% of the scores. Therefore, about 2.5% of the scores lie in the shaded region.
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Evaluate the integral: S1 0 (-x³ - 2x² - x + 3)dx
The integral: S1 0 (-x³ - 2x² - x + 3)dx is -1/12
An integral is a mathematical operation that calculates the area under a curve or the value of a function at a specific point. It is denoted by the symbol ∫ and is used in calculus to find the total amount of change over an interval.
To evaluate the integral:
\($ \int_0^1 (-x^3 - 2x^2 - x + 3)dx $\)
We can integrate each term of the polynomial separately using the power rule of integration, which states that:
\($ \int x^n dx = \frac{x^{n+1}}{n+1} + C $\)
where C is the constant of integration.
So, we have:
\($ \int_0^1 (-x^3 - 2x^2 - x + 3)dx = \left[-\frac{x^4}{4} - \frac{2x^3}{3} - \frac{x^2}{2} + 3x\right]_0^1 $\)
Now we can substitute the upper limit of integration (1) into the expression, and then subtract the result of substituting the lower limit of integration (0):
\($ \left[-\frac{1^4}{4} - \frac{2(1^3)}{3} - \frac{1^2}{2} + 3(1)\right] - \left[-\frac{0^4}{4} - \frac{2(0^3)}{3} - \frac{0^2}{2} + 3(0)\right] $\)
Simplifying:
\($ = \left[-\frac{1}{4} - \frac{2}{3} - \frac{1}{2} + 3\right] - \left[0\right] $\)
\($ = -\frac{1}{12} $\)
Therefore,
\($ \int_0^1 (-x^3 - 2x^2 - x + 3)dx = -\frac{1}{12} $\)
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PLEASE PLEASE PLEASE HELP MEE!
10 POINTS
Answer:
16,8,36 respectivly
Step-by-step explanation:
solve pls brainliest
Answer:
24 m^2
Step-by-step explanation:
To find the area of the cement, we subtract the area of the grass from the total area of the grass and cement.
Total area: 6 × 5 = 30Grass area: 3 × 2 = 630 - 6 = 24Therefore, the answer is 24 m^2.
Step-by-step explanation:
area of the whole backyard(6 mltiplied by 5=30)_area of grass(2 multiplied by 3 =6)
30_6=24
the answer is 24 square meters
A sweatshirt is marked down from $28 to $21. What is the percentage of change?
Answer:
-25.00% decrease, quite a deal
Answer:
25%Step-by-step explanation:
$28 = 100%
$7 = 25%
$21 = 75%
so, therefore
% change = 100% - 75%
= 25%
MARK ME BRAINLISTWhat is the equation of the line that passes through the point (4,2) and is
parallel to the line represented by
y - 4 = 1/2(x + 3)?
Answer:
Step-by-step explanation:
If they are parallel, that means the slope is the same. We can then use the slope point form: y - y1 = 1/2(x - x1) which is the form in the question as well.
Given that there is a point at (4,2), the equation of the line is then
y - 2 = 1/2(x-4)
Answer:
\(y=\frac{1}{2} x\)
Step-by-step explanation:
Find the slope of the original line and use the point-slope formula
\(y-y_{1} =m(x-x_{1} )\)
to find the line parallel to
\(y-4=\frac{1}{2} (x+3)\).
The lit how the amount of each ingredient charlotte ued to make macaroni and cheee. 16 ounce 2 egg 2. 5 cup of milk 3 1/2 cup of chedder cheee
The combined ounces of meat and cheese used on each sandwich is 7 ounces and the combined ounces of meat on all sandwiches is 52 ounces and that of cheese on all sandwiches is 39 ounces.
According to the question,
We have the following information:
A sandwich hop serve 4 ounce of meat and 3 ounce of cheese on each sandwich. After making sandwiches for an hour the hop owner has used 91 combined ounce of meat and cheese.
Combined ounces for 1 sandwich:
Ounces of meat + ounces of cheese
4+3
7 ounces
It is given that in an hour 91 ounces of combined cheese and meat are used.
Now, we have:
Number of sandwiches made in 1 hour = 91/7
Number of sandwiches = 13
Ounces of meat used in 13 sandwiches can be found using multiplication as follows:
13*4
Ounces of meat used in 13 sandwiches = 52 ounces
Ounces of cheese used in 13 sandwiches can found using multiplication as follows:
13*3
Ounces of cheese used in 13 sandwiches = 39 ounces
Hence, the combined ounces of meat and cheese used on each sandwich is 7 ounces and the combined ounces of meat on all sandwiches is 52 ounces and that of cheese on all sandwiches is 39 ounces.
complete question is
A andwich hop erve 4 ounce of meat and 3 ounce of cheee on each andwich. After making andwiche for an hour, the hop owner ha ued 91 combined ounce of meat and cheee. How many combined ounce of meat and cheee are ued on each (1) andwich?
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Exercise #3: A car is moving at a steady speed on a highway such that the distance it travels is
proportional to the time it has traveled. The car travels a distance of 170 miles in 2.5 hours.
Unit rate: 68 miles per hour
(c) If the car traveled 425 miles, set up and
solve a proportion that could be used to
find the time, I, it had been driving
Miles
hours
Answer:
I=2.5 hours
Step-by-step explanation:
We can use the proportion 170 mi/2.5 hr=425 mi/I hr
Thus, we get 170I=(425*2.5).
Solving for I gives us 6.25 hours
Whats the answer y’all
The expressions that will give you a difference of 5 are: -3 - (-8) and 1 - (-4).
What is the Difference of Two Expressions?The difference of two expressions is determined by subtracting one from the other.
Find the difference of each of the expressions given to determine which will give us 5.
-3 - (-8)
= -3 + 8
= 5
-2 - 3 = -5 [this is not the same as 5]
1 - (-4)
= 1 + 4
= 5
7 - (-2)
= 7 + 2
= 9
-3 - (-8) and 1 - (-4) will give us a difference of 5.
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Consider the following sample data values. 7 4 6 12 8 15 1 9 13 a) Calculate the range. b) Calculate the sample variance. c) Calculate the sample standard deviation. a) The range is 14 b) The sample variance is (Round to two decimal places as needed.) c) The sample standard deviation is (Round to two decimal places as needed.)
a) The range is 14.
b) The sample variance is 20.78.
c) The sample standard deviation is 4.56.
a) Range
The range of a given set of data values is the difference between the maximum and minimum values in the set. In this case, the maximum value is 15 and the minimum value is 1. So, the range is:
Range = maximum value - minimum value
Range = 15 - 1
Range = 14
b) Sample variance
To calculate the sample variance, follow these steps:
1. Calculate the sample mean (X). To do this, add up all of the data values and divide by the total number of values:
n = 9
∑x = 7 + 4 + 6 + 12 + 8 + 15 + 1 + 9 + 13 = 75
X = ∑x/n = 75/9 = 8.33
2. Subtract the sample mean from each data value, square the result, and add up all of the squares:
(7 - 8.33)² + (4 - 8.33)² + (6 - 8.33)² + (12 - 8.33)² + (8 - 8.33)² + (15 - 8.33)² + (1 - 8.33)² + (9 - 8.33)² + (13 - 8.33)² = 166.23
3. Divide the sum of squares by one less than the total number of values to get the sample variance:
s² = ∑(x - X)²/(n - 1) = 166.23/8 = 20.78
Therefore, the sample variance is 20.78 (rounded to two decimal places).
c) Sample standard deviation
To calculate the sample standard deviation, take the square root of the sample variance:
s = √s² = √20.78 = 4.56
Therefore, the sample standard deviation is 4.56 (rounded to two decimal places).
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In 2010 and 2012, gallup asked the same 50 people how many hours had they worked at a job in the past 7 days. Is there a difference in the population mean amount of hours worked at a job between 2010 and 2012? would this be an example of independent or dependent samples?.
The given case of Gallup asking the same 50 people how many hours had they worked at a job in the past 7 days. is an example of dependent sample.
What is dependent sample?The measured values in relation in a dependent sample (also called a paired sample).
Some characteristics of dependent sample are-
It is a dependent sample, for instance, if a sample of patients who have knee reconstruction is selected, and each patient is questioned during the procedure. The reason for this is that the identical person was questioned twice.If, for instance, you wish to examine if a new category of baseball bat really does have an impact on notable features and the same individuals play once from the old bat and once with new bat, you also have a dependent sample. Since each player utilized both bats, there are two measured values for each player, all measured values are likewise accessible in pairs.A variation is preselected based on the format wherein you insert your data. A series is typically a respondent and, more broadly, a case. Metric values in a sequence are therefore originally regarded as dependent.To know more about dependent sample, here
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A person bought 32 seeds for $16. How many can another person buy if they have $4?
Answer:
8 seeds
Step-by-step explanation:
16 = 32
4 = ?
16 ÷4 = 4
32 ÷ 4 = 8
Simple interest on a sum of
money at the end of 5 years is
4/5 of the sum itself. Find the
rate per cent p.a.
Answer:16%
Step-by-step explanation:
please answer I keep wasting my points and getting ignored
Answer:
205 square ft
Step-by-step explanation:
1. Since his room is 12ft by 15.75ft, we can multiply to find the square ft needed to cover his room.
2. Since his closet is 2ft by 8ft, we can multiply to find the square ft needed to cover his closet.
3. Then, we add them to find how much carpeting is needed total.
4. (12*15.75)+(2*8)=189+16=205
which of the following statistics determines whether there are differences between two nominally scaled variables?
The chi-square statistic is used to determine whether there are differences between two nominally scaled variables. Chi-Square is a statistical test used to compare two nominal variables to determine whether they differ.
The Chi-Square test is used to test for differences between two groups. When you want to compare groups or examine the relationship between two variables, this test is useful. The chi-square test is a method of statistical inference that can be used to compare observed frequencies with expected frequencies, allowing us to determine whether there is a meaningful difference between them. When the p-value obtained from a chi-square test is less than 0.05, it is generally considered statistically significant.
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a ball is dropped from a height of 16 feet. each time it drops feet, it rebounds feet. (a) find the total vertical distance traveled by the ball
The total distance travelled by the ball after dropping from a height of 16 feet and rebounds 0.81 feet is equal to 168.4 feet.
Balls from a height = 16 feet
Rebounds = 0.81feet
It form a geometric progression pattern :
16 + 16(0.81) + 16(0.81)² + 16(0.81)³ + ......+ ∞
Using sum of geometric progression :
S = a / 1 - r
here a = 16
r = 0.81
S represents the sum .
The total distance travelled by the ball is double of the sum .
S = 16 / ( 1 - 0.81 )
= 16 / ( 0.19)
= 84.2 feet
Total distance travelled by the ball = 2 × 84.2 feet
= 168.4 feet
Therefore, the total distance travelled by the ball as per given situation is equal to 168.4 feet.
The above question is incomplete, the complete question is:
A ball is dropped from a height of 16 feet. Each time it drops h feet, it rebounds 0.81h feet. Find the total distance traveled by the ball .
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IF 2^x=10 AND 10^y =128 ,find xy
Answer:
Your answer is
XY= 7
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which method represents a correct way to solve the equation 2(t−5)=48?
The solution to the equation 2(t - 5) = 48 is t = 29.
To solve the equation 2(t - 5) = 48, we can use the following steps:
Distribute the 2 to the terms inside the parentheses:
2t - 10 = 48
Add 10 to both sides of the equation to isolate the variable term:
2t = 58
Divide both sides of the equation by 2 to solve for t:
t = 29
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