helppp
I just have 1 minutes to answer it​

Answer:

12.55

Step-by-step explanation:

20-7.45=12.55 explanation

We can't flip a coin a fractional number of times, we round up to the nearest whole number, which gives us a minimum sample size of 385 flips. We would need to flip the coin at least 385 times in order to obtain a 95% confidence interval of width at most 0.05 for the probability of flipping a head.

To determine how many times we would need to flip the coin, we can use the formula for the margin of error for a confidence interval:
Margin of error = z* * (standard deviation / sqrt(sample size))
Here, z* is the z-score corresponding to the desired level of confidence (95% in this case), and the standard deviation is equal to sqrt(p*(1-p)), where p is the true probability of flipping a head. Since we suspect the coin is fair, we can use p = 0.5.
Rearranging the formula to solve for sample size, we get:
Sample size = (z* / margin of error)^2 * p * (1-p)
Plugging in the values we have, with a desired margin of error of 0.05 and a z-score of 1.96 for 95% confidence, we get:
Sample size = (1.96 / 0.05)^2 * 0.5 * (1-0.5) = 384.16
Since we can't flip a coin a fractional number of times, we round up to the nearest whole number, which gives us a minimum sample size of 385 flips. Therefore, we would need to flip the coin at least 385 times in order to obtain a 95% confidence interval of width at most 0.05 for the probability of flipping a head.

To know more about probability visit:

https://brainly.com/question/31120123

#SPJ11

Answer: i think it is D

we have:

\(\frac{z}{w}= \frac{6(cos\frac{\pi }{3}+i.sin\frac{\pi }{3} ) }{3(cos\frac{\pi }{6}+i.sin\frac{\pi }{6}) }\\\\\\<=>\frac{z}{w}=\frac{2(\frac{1}{2}+i.\frac{\sqrt{3} }{2}) }{\frac{\sqrt{3} }{2}+i.\frac{1}{2} }\\\\<=>\frac{z}{w}= \frac{2+2\sqrt{3}.i }{\sqrt{3}+i }\)

Step-by-step explanation:

Answer:

At most, they can invite 119 people and stay within their budget

Step-by-step explanation:

4,000 = 70 + 33x

3,930 = 33x

3930/33 = x

119 = x

—

4,000 = 70 + 33x

4,000 = 70 + 33(119)

4,000 = 70 + 3,927

4,000 = 3,997

a. The rule for determining outputs is to find the set of all distinct factors b.  {1, 2, 4, 5, 10, 20}. c. {1, 5}. d. 1 and itself. e. there exists a natural number n such that card(S(n)) = 2. f. d(n) = card(S(n)). g. False. h. True.

(a) The set of divisors function S is a function from the natural numbers N to sets of natural numbers. Its domain is the set of all natural numbers, and its codomain is the set of all sets of natural numbers. The rule for determining outputs is to find the set of all distinct factors of a given natural number n.

(b) S(6) = {1, 2, 3, 6}, S(10) = {1, 2, 5, 10}, S(12) = {1, 2, 3, 4, 6, 12}, S(15) = {1, 3, 5, 15}, S(20) = {1, 2, 4, 5, 10, 20}.

(c) S(2) = {1, 2}, S(3) = {1, 3}, S(5) = {1, 5}.

(d) No, there does not exist a natural number n such that card(S(n)) = 1. This is because every natural number has at least two distinct natural number factors: 1 and itself.

(e) Yes, there exists a natural number n such that card(S(n)) = 2. This happens when n is a prime number, as its only factors are 1 and itself.

(f) The number of divisors function d(n) is simply the cardinality of the set S(n). That is, d(n) = card(S(n)).

(g) False. For example, S(6) = {1, 2, 3, 6} and S(9) = {1, 3, 9}.

(h) True. Let T be any subset of N. Let n be the product of all the distinct prime factors of all the elements of T. Then S(n) will be precisely the set of elements in T, since the prime factorization of any element in T will be a subset of the prime factors of n.

Learn more about natural number here

https://brainly.com/question/22250484

#SPJ11

Answer:

B

Step-by-step explanation:

5+0.29

The possibility that something will occur, prior measures, and conventional objective measurements all influence the likelihood that something will occur.

What is probability and what types are there in total?

The study of probability is a field of mathematics that determines the probability of an event occurring, which is represented by a number between 1 and 0. When an event has a probability of 1, it can be said to be a certainty. For instance, if the coin lands flat, the likelihood that it will come up  "heads or  tails" is 1. There are no other possible outcomes. A probability of .5 indicates that there is an equal chance that an event will occur or not.

Probability can be quantitatively represented in the simplest form as follows: the total number of possible outcomes multiplied by the ratio of the number of occurrences of a targeted event divided by the sum of the occurrences and failures of occurrences:

P(a) = P(a)/[P(a) + P(b)]

To know more about Probability, visit:

https://brainly.com/question/14210034

#SPJ4

The type of variable for,

a. The number of counties in California: Quantitative discrete.

b. The stages of childhood: Qualitative ordinal.

c. In the scenario above, 23 minutes is a statistic, because 28 students is a sample.

d. Between 6 minutes and 8 minutes: Approximately 68% of the athlete's mile times are expected to be between 6 and 8 minutes, according to the empirical rule.

e. Between 4 minutes and 7 minutes: Approximately 68% of the athlete's mile times are expected to be between 4 and 10 minutes, according to the empirical rule.

f. Less than 9 minutes: Approximately 84% of the athlete's mile times are expected to be less than 9 minutes, according to the empirical rule.

In statistics, variables can be categorized into two types: qualitative and quantitative.

Qualitative variables describe characteristics or qualities that cannot be measured numerically, such as gender or hair color.

Quantitative variables, on the other hand, represent numerical values that can be measured or counted.

There are two types of quantitative variables: continuous and discrete. Continuous variables can take any numerical value within a range, such as age or weight.

Learn more about the type of a variable at

https://brainly.com/question/14501374

#SPJ4

The series of transformations that shows that parallelogram ABCD is congruent to parallelogram A'B'C'D' by superimposing one onto the other is a combination of translation and rotation that involves 150 degrees. A transformation refers to the process of changing an object's position, size, or shape.

Translation, reflection, rotation, dilation, and skew are the five basic transformation types that modify an object.In geometry, congruent shapes have the same shape and size. To superimpose one shape onto another means to make them coincide with each other.

The following series of transformations would show that parallelogram ABCD is congruent to parallelogram A'B'C'D' by superimposing one onto the other: Step 1: Translation. Translate the parallelogram ABCD by 5 units to the right and 6 units down to obtain parallelogram A1B1C1D1.Step 2: Rotation. Rotate parallelogram A1B1C1D1 by 150 degrees counterclockwise around point A1 to obtain parallelogram A2B2C2D2.Step 3: Translation. Translate parallelogram A2B2C2D2 by 8 units to the right and 3 units up to obtain parallelogram A'B'C'D'.Thus, the series of transformations that shows that parallelogram ABCD is congruent to parallelogram A'B'C'D' by superimposing one onto the other involves translation and rotation, with a rotation of 150 degrees.

Learn more about parallelogram

https://brainly.com/question/28854514

#SPJ11

Prem purchased a plot for ₹1.1 lakh and its price increased at an annual rate of 5%.Ram's flat had a higher value than Prem's plot, Prem paid Ram the difference, which was ₹0.118 lakh or ₹11,800. Ram's flat is more valuable than Prem's plot of land

After two years, the value of Ram's flat would be ₹1.1 lakh + (10% of ₹1.1 lakh × 2 years) = ₹1.43 lakh.

Similarly, the value of Prem's plot of land would be ₹1.1 lakh + (5% of ₹1.1 lakh × 2 years) = ₹1.21 lakh.

Therefore, the difference in value between Ram's flat and Prem's plot of land is ₹1.43 lakh - ₹1.21 lakh = ₹22,000.

Ram would have to pay ₹22,000 to Prem as Ram's flat is more valuable than Prem's plot of land.

Ram purchased a flat for ₹1.1 lakh and its price increased at an annual rate of 10%. After two years, the flat's value would be:

1.1 lakh * (1 + 0.1)^2 = 1.1 lakh * 1.21 = ₹1.331 lakh

Prem purchased a plot for ₹1.1 lakh and its price increased at an annual rate of 5%. After two years, the plot's value would be:

1.1 lakh * (1 + 0.05)^2 = 1.1 lakh * 1.1025 = ₹1.213 lakh

After exchanging their properties, the difference in value is:

₹1.331 lakh (flat) - ₹1.213 lakh (plot) = ₹0.118 lakh

Since Ram's flat had a higher value than Prem's plot, Prem paid Ram the difference, which was ₹0.118 lakh or ₹11,800.

Learn more about annual rate  here:

https://brainly.com/question/28347040

#SPJ11

The appropriate sample size formula on the TI-84 calculator, you can determine the sample size needed to achieve your desired margin of error for estimating population parameters.

To find the sample size with a desired margin of error on a TI-84 calculator, you can use the following steps:

1. Determine the desired margin of error: Decide on the maximum allowable difference between the sample estimate and the true population parameter. For example, if you want a margin of error of ±2%, your desired margin of error would be 0.02.

2. Determine the confidence level: Choose the desired level of confidence for your interval estimate. Common choices include 90%, 95%, or 99%.

Convert the confidence level to a corresponding z-score. For instance, a 95% confidence level corresponds to a z-score of approximately 1.96.

3. Calculate the estimated standard deviation: If you have an estimate of the population standard deviation, use that value. Otherwise, you can use a conservative estimate or a pilot study's standard deviation as a substitute.

4. Use the formula: The sample size formula for estimating a population mean is n = (z^2 * s^2) / E^2, where n represents the sample size, z is the z-score, s is the estimated standard deviation, and E is the desired margin of error.

5. Plug in the values: Input the values of the z-score, estimated standard deviation, and desired margin of error into the formula. Use parentheses and proper order of operations to ensure accurate calculations.

6. Calculate the sample size: Perform the calculations using the calculator, making sure to include the appropriate multiplication and division symbols. The result will be the recommended sample size to achieve the desired margin of error.

To know more about parameters refer here:

https://brainly.com/question/29911057#

#SPJ11

Answer:

All besides  4 – 6x = 4

Answer:

0.05 metrs = 5 cetimeters

Step-by-step explanation:

1 meter = 100 centimeters

0.05 meters = 0.05 * 100 = 5 centimeters

The shape of the normal distribution is bell shape and it is also symmetrical from the left and right sides about the origins (mean).

What is a normal distribution?

A normal distribution is a function on some random variables, which represent the set of all those random variables in a symmetrical bell shape about the mean value.

It shows that the probability of occurrence of some data which is distributed over a function is more at or around the mean.

It is also known as probability distribution curve.

The normal distribution has two parameters:

What is the shape of the normal distribution?

The normal distribution curve is at it's peak at the mean value. This shows that the probability of occurrence of the data or value is more concentrated or distributed about the mean. It is also symmetric about the mean. As we more further from the mean, we see that the normal distribution curve gradually decreases showing that the probability of occurrence of the data or the values decreases. The shape that this curve forms is like a bell-shaped. So the shape of normal distribution is bell shape.

Hence, the shape of the normal distribution is bell shape and it is also symmetrical from the left and right sides about the origins (mean).

Know more about "normal distribution" here: https://brainly.com/question/15103234

#SPJ4

Answer:

36

Step-by-step explanation:

Make a big square and a little one by cutting it. 6x5 is 30 and the small one is 3x2 which is 6....add then you get 36

Answer:

she recurved 15.89 over the weekend

Step-by-step explanation:

Answer:15.89

Step-by-step explanation:

35.21-19.32=

15.89

Answer:600 students

Step-by-step explanation:

Answer:

There are 600 students participating. The operation you have to carry out is 800 × .75 = 600.

Or you can simply divide 800÷4= 200. 3/4=200×3. The percentage of students is 3/4 that would be 600 students participating.

Answer:

d

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

12 started at  the x axis

and 5 started at the y axis

^_^:-D:-)☆*: .｡. o(≧▽≦)o .｡.:*☆(●'◡'●)(❁´◡`❁)ᓚᘏᗢ( •_•)>⌐■-■

hope i helped you

The price p which the first coupon code give him a better deal is less than $99.93. The inequality he can use is the first coupon code will give Samir a better deal.

We can find the value of "p" by solving the inequality.

        (1 - 0.05) * p + 0 < (1 - 0.20) * p + 14.99

This inequality compares the total cost (price minus discount plus shipping) of using the first coupon code on the left-hand side and the total cost of using the second coupon code on the right-hand side. If the left-hand side is less than the right-hand side, then the first coupon code gives a better deal.

Solving for p, Samir can find the minimum price at which the first coupon code is a better deal.

        0.95 * p + 0 < 0.80 * p + 14.99

        0.95 * p < 0.80 * p + 14.99

       0.15 * p < 14.99

        p < 99.93

So, if the price "p" is less than 99.93, the first coupon code will give Samir a better deal.

Learn more about Inequality for Better Deal here:

https://brainly.com/question/9993216

#SPJ4

Answer:

Part A Part B Part C explained

Step-by-step explanation:

PART A: Extrema: relative minimums (4,-2) and maybe (7,-3) (uncertain because it’s an endpoint), relative maximums (6,0) and maybe (1,6) (uncertain because it’s an endpoint)

Zeros: (6,0), somewhere between t = 3 and t = 4 since the graph changes from positive to negative, and somewhere possibly between t = 6 and t = 7 unless the graph hits (6,0) and stays negative.

End behavior: We can guess that as x approaches infinity, the functions approaches negative infinity, and as x approaches negative infinity, the function approaches infinity.

Intervals of increase and decrease: Increasing on (4, 6), decreasing on (1, 4) and (6, 7)

PART B: The relative minimums indicate that the two lowest temperatures occurred on day 4 at -2°F and day 7 at -3°F. The relative maximums indicate that the weekly highs were day 1 at 6°F and day 6 at 0°F.

The zeros of the function represent when the temperature in Johnstown was 0°F. This happened sometime between days 3 and 4 and on day 6.

In the context of the problem, it doesn’t make sense to go an infinite number of degrees below zero. And, the end behavior is ignored because of the restricted range.

The intervals of increase indicate when the temperature is rising, and the intervals of decrease indicate when the temperature is dropping. The intervals where the values are positive indicate when the temperature is above 0°F. The intervals where the values are negative indicate when the temperature is below 0°F.

PART C: The domain is restricted to the number of days the town recorded the temperature. So, the domain is [1, 7].

The range represents the range of temperatures of Johnstown over the course of one week. So, the range is [-3, 6].

Answer:

Part A was missing the last so this is the correct answer.

Extrema: relative minimums (4,-2) and maybe (7,-3) (uncertain because it’s an endpoint), relative maximums (6,0) and maybe (1,6) (uncertain because it’s an endpoint)

Zeros: (6,0), somewhere between t = 3 and t = 4 since the graph changes from positive to negative, and somewhere possibly between t = 6 and t = 7 unless the graph hits (6,0) and stays negative.

End behavior: We can guess that as x approaches infinity, the functions approach negative infinity, and as x approaches negative infinity, the function approaches infinity.

Intervals of increase and decrease: Increasing on (4, 6), decreasing on (1, 4) and (6, 7)

Positive and negative intervals: Positive from 1 to somewhere between t = 3 and t = 4, and negative from somewhere between t = 3 and t = 4 to t = 6, and from some point after t = 6 to t = 7.

But other than that everything else was correct and thank you.

Step-by-step explanation:

Answer:

Step-by-step explanation:

perimeter of rectangle=2(length+width)

=2(70+65)

=2*135

=270 feet

The angle between the stick and the base of the box is 77. 9 degrees

To determine the angle between the stick and the base, we have to know the trigonometric identities.

These identities are;

From the information given, we have;

sin A = FB/AB

Given that;

GB = 14.5cm

AB = 18. 6cm

substitute for the length of the sides, we have;

sin A = 14.5/18. 6

Divide the values, we have;

sin A = 0. 7796

Find the inverse sine

A = 77. 9 degrees

Learn more about trigonometric identities at: https://brainly.com/question/7331447

#SPJ1

The probability that a sample of 10 items will contain at most 1 defective item is 0.7361

Consider X to denote the number of defective items which follows binomial distribution with sample size, n equals to 10.

The probability p of an item produced by a certain machine will be defective is 0.1.

Therefore, the probability q of an item produced by a certain machine will not be defective is:

(1−0.1)

=0.9

The probability of at most one defective item can be calculated as follows:

\(P(X\leq 1)=P(X=0)+P(X=1)\\\)

\(=^{10} C_{0} p^{0} (1-p)^{10} +^{10} C_{1} p^{1}(1-p)^{9}\)

\(=(0.9)^{10} +10(0.1)(0.9)^{9}\)

\(=0.7361\)

Learn more about probabilities here:

https://brainly.com/question/23780714

#SPJ4

Answer: 20

Work: A = 1/2 bh

A = 1/2 (5(8))

A = 1/2 (40)

a = 20

plz mark brainliest

Answer:

Step-by-step explanation:

\(A = \frac{1}{2} bh \)

when

b = 5

h = 8

Substitute the values of b and h into the above formula

That's

\(A = \frac{1}{2} (8)(5) \\ A = \frac{1}{2} \times 40 \)

We have the final answer as

Hope this helps you

Answer:

590

Step-by-step explanation:

2360_

_8+12

=2360_

_4

590

Answer:

I think 25% of 15, sorry if I am wrong :(

or, z + 106° = 180° ( being straight angle )

or, z = 180°- 106°

•°• z = 74°

Now,

or, z + y = 180° ( being co-interior angle )

or, 74° + y = 180°

or, y = 180° - 74°

•°• y = 106°

~nightmare 5474~

The value of x is 74.

The value of y is 106.

The sum of angles on a straight line is 180. In order to determine the value of x, subtract 106 from 180.

x = 180 - 106 = 74

In order to determine the value of y, subtract 180 from 74

180 - 74 = 106.

To learn more about subtraction, please check: https://brainly.com/question/854115

8m/12m is the expression that represents all the equivalent ratios of 8/12.

The ratio is a numerical relationship between two values that demonstrates how frequently one value contains or is contained within another.

Given:

A ratio is 8/12.

To  write an equivalent ratio of 8/12:

All the ratio that gives the equivalent to the value 8/12 is the equivalent ratio of 8/12.

Let m be any variable.

So, 8m/12m is the collection of all the equivalent ratios of 8/12.

Therefore, there are infinite choices possible for the equivalent ratios of 8/12.

To learn more about the ratio;

https://brainly.com/question/13419413

#SPJ1

The percentile rank / score in the setting of statistics denotes the percentage of the population that falls below it when the data is organized in ascending order.

For the given question.

The difference in the percentiles and raw scores is-

To know more about the normally distributed, here

https://brainly.com/question/4079902

#SPJ4