a certain population is strongly skewed to the right. we want to estimate its mean, so we will collect a sample. which should be true if we use a large sample rather than a small one?i. the distribution of our sample data will be closer to normal.ii. the sampling model of the sample means will be closer to normal.iii. the variability of the sample means will be greater.

Answer:

44

Step-by-step explanation:

half of that plus the 4 is 44

Answer:

42.

Step-by-step explanation:

First, there must be more twix bars than kit kats, so that means the amount of twix bars is over 40. So test 42 and 44.
If there are 42 twix bars, then there are 42 - 4 = 38 kit kats in there.
42 + 38 = 80 (total), so 42 is the correct answer.

The area of the given trapezoidal site is 250,000 sq. ft.

The area of the trapezoidal with the dimensions of both bases and the height is given by the formula,

Area = 1/2 × height × (base1 + base2)

Units: square units

The given trapezoidal site has a base of 150 feet, i.e., base1 = 150 ft; a height of 2000 ft, i.e., height = 2000 ft and a parallel base of 100 feet, i.e., base2 = 100 ft.

Then, the area of the trapezoidal is

= 1/2 × 2000 × (150 + 100)

= 1/2 × 2000 × 250

= 250,000 sq. ft

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we would need a sample size of at least 502 for the approximate probability of the random interval (Y1/n - Y2/n) ‡ 0.05 covering pi - p2 to be at least 0.80.

To compute n, we can use the formula:
n = ((zα/2)^2 * 2p*(1-p*)) / (ε^2)
Where zα/2 is the z-score associated with a confidence level of 1-α, p* is the probability of success for a binomial distribution, and ε is the margin of error.
Since we are given that the approximate probability of the random interval (Y1/n - Y2/n) ‡ 0.05 covering pi - p2 is at least 0.80, we can set α = 0.20 to find the corresponding z-score of 1.28.
Using p* = 1/2 as an upper bound for both P1 and P2, we can calculate the margin of error as:
ε = zα/2 * sqrt((p*(1-p*)) / n)
Plugging in the values, we get:
0.05 = 1.28 * sqrt((0.25) / n)
Solving for n, we get:
n = 501.76
Therefore, we would need a sample size of at least 502 for the approximate probability of the random interval (Y1/n - Y2/n) ‡ 0.05 covering pi - p2 to be at least 0.80.

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Correct option is D. As used in lines 1-2, "not readily verifiable" most

nearly means not completely understood.

Choice D is the best answer. In lines 1-6, the narrator says that he feels a

“vast yearning” and that his emotions are “complicated.” He explains that he does “not understand quite what it is that the yearning desires.” In this context, his emotions are “not readily verifiable,” or not completely understood.

Choices A, B, and C are incorrect because in this context, “not readily verifiable” does not mean unable to be authenticated, likely to be contradicted, or without empirical support.

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Answer:

The fourth vertex must be located at \(Z(x,y) = (4, -1)\). The graph of the figure is included below.

Step-by-step explanation:

Let be \(X(x,y)\), \(Y(x,y)\), \(Z(x,y)\) and \(W(x,y)\) so that a rectangle is formed. Hence, we must satisfy the following conditions:

\(X(x,y) = (a, c)\) (1)

\(Y(x,y) = (a, d)\) (2)

\(Z(x,y) = (b, c)\) (3)

\(W(x,y) = (b, d)\) (4)

\(a < b\) (5)

\(c < d\) (6)

If we know that \(a = -1\), \(b = 4\), \(c = -1\), \(d = 1\), then we have the following points:

\(X(x,y) = (-1, -1)\)

\(Y(x,y) = (-1, 1)\)

\(Z(x,y) = (4, -1)\)

\(W(x,y) = (4,1)\)

Then, the fourth vertex must be located at \(Z(x,y) = (4, -1)\).

9514 1404 393

Answer:

  (x, y) = (3, 9)

Step-by-step explanation:

When you add the two equations together, you get ...

  (y) +(y) = (2x +3) +(-2x +15)

  2y = 18 . . . . . . simplify

  y = 9 . . . . . . . . divide by 2

__

When you subtract the second equation from the first, you get ...

  (y) -(y) = (2x +3) -(-2x +15)

  0 = 4x -12 . . . . . simplify

  0 = x -3 . . . . . . . divide by 4

  3 = x . . . . . . . . . add 3

The solution is (x, y) = (3, 9).

_____

Additional comments

These are two equations in two unknowns. There are a number of ways to solve them. One of the simplest is to use one expression for y to substitute for y in the other equation:

  2x +3 = -2x +15

Adding 2x and subtracting 3*, you get

  4x = 12

  x = 3 . . . . same solution as above.

_____

* As with any operation performed on an equation, you must do the same thing to both sides of the equation. For example, "adding 2x" looks like ...

  2x +3 +2x = -2x +15 +2x . . . . . "2x" is added to both sides of the equation

When we collect terms, this simplifies to ...

  4x +3 = 15 . . . . . note that -2x+2x = 0

Answer:

The answer is 5x - 13

Step-by-step explanation:

All we do is add the x's and the other numbers.

2 + 3 = 5 and 10 + 3 = 13

So, the equation is 5x - 13

Hope this helps! :)

Answer:

ok i know this is correct %100 it is D

Step-by-step explanation:

this is because if u have 8/20 and reduce by four do divide 8 by four and 20 by four that would be 2/5!!

IF THIS HELPED PLZ GIVE ME BRAINIEST!!

Answer:

2 / 5

Step-by-step explanation:

8/20 simplifies to 2/5. Simply divide 8 and 20 by 4 and you get your simplified fraction.

The division for 514 / 28 is 18 remainder 10.

Long Division is a method for dividing large numbers, that breaks the division problem into multiple steps

Step 1: Here, the digits to first use is 51. This means 51 divided by 28 will give 1.

Step 2: Subtract 28 from 51 and this is 23. Bring the third digit of the dividend down and place it beside 23. This will be 234.

Step 3: Now, 234 divided by 28 will be 18.

Step 4: Multiply 18 by 28 and subtract the value. The remainder will be 10.

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The unit price of the pairs of insulated socks is $7.19.

When shopping, it's important to know the unit price of a product so that you can compare different brands and sizes to find the best value. In this case, we are given that a package of 3 pairs of insulated socks costs $21.57 and we are asked to find the unit price of one pair of socks.

To do this, we need to divide the total cost of the package by the number of pairs of socks in the package. Since there are 3 pairs of socks in the package, we can divide $21.57 by 3 to get the unit price per pair of socks.

Therefore, the unit price of the pairs of insulated socks is $7.19. This means that each pair of socks costs $7.19 individually. If we were comparing this brand of socks to another brand that sold them for $10.00 per pair, we would know that the original brand is the better value because their unit price is lower.

Knowing the unit price can help you make informed purchasing decisions and ensure that you are getting the best value for your money. It is always a good idea to calculate the unit price for items you frequently buy to make sure you are not overspending.

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(D) is the correct answer. The net force on a current loop in a uniform magnetic field is zero. With a homogeneous magnetization, the net force on any plane-shaped current-carrying loop is zero.

The net torque on something like a previous loop of any shape in a constant magnetic field is computed using =B = B, where B is the magnetic field strength.

Why is there no net magnetic force in a closed loop?

Assumption: Under a uniform magnetic field, the net force on a closed circular conductive loop is zero. Reason: When ever a conducting spherical ring is put in a homogeneous magnetic field such that the magnetism is parallel to the surface of the loops, the torque is produced is zero.

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Answer:

Step-by-step explanation:

Clays rate is 1/2 hour per lawn.  We can write this as Rate = 3/2 hr/lawn.

If Clay mows for 1/3 hour, we can determine the amount of lawn mowed by dividing the 1/3 hour by the rate:

(1/3 hr)/(3/2 hr/lawn) = (1/3)*(2/3) = 2/9 of a lawn.

The length of the rectangle, l = 170 m

Given,

Perimeter of the rectangle, p = 660 m

Width of the rectangle, w = 160 m

Here the formula for perimeter of the rectangle is,

Perimeter of the rectangle, p = 2l + 2w

Therefore,

Perimeter of the rectangle, p = 2l + 2w

                 660 = 2l + 2 x 160

                 660 = 2l + 320

                 2l = 660 – 320

                 2l = 340

                  l = 340 / 2

                  l = 170

That is, the length of the rectangle, l = 170 m

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The question is incomplete. Completed question is given below.

Using the formula for perimeter 2l + 2w = p. Find the length l of the rectangle. Given the perimeter p = 660m and width w = 160 m

Answer:

  138°

Step-by-step explanation:

You want the measure of the angle at two tangents when they intercept an arc of 42°.

The short answer is that the exterior angle x is the supplement of the measure of the arc:

  x = 180° -42°

  x = 138°

An exterior angle where secants meet is half the difference of the arcs of the circle they intercept. Here, the secants have been located so the corresponding chord length between the near and far circle intercept points have degenerated to zero. That is, they are tangents.

The angle relation still holds:

  x = (long arc - short arc)/2 = ((360° -42°) -42°)/2 = (360° -2·42°)/2

  x = 180° -42° = 138°

The tangents, together with their associated radii form a quadrilateral. The angles at the tangents are 90°, and the total of all angles is 360°. This gives us the relation ...

  x + 90° +42° +90° = 360°

  x +42° = 180° . . . . . . . . . . . . . subtract 180°

  x = 180° -42° = 138°

(We solved this with an extra step, so you could see the same "supplementary angles" relationship between x and 42°.)

Answer:

0.5 is the answer! hope this helps!

Answer: x= -3 + 2\(\sqrt{2\\}\) or -3 -2 \(\sqrt{2}\)

Step-by-step explanation:

First you want to get the quadratic formula

in this case a=1 b=6 and c=1

plug it in and solve the equations

(sorry don't know how to put in equations here)

Answer:

Answer: x= -3 + 2\sqrt{2\\} or -3 -2 \sqrt{2}

Step-by-step explanation:

First you want to get the quadratic formula

in this case a=1 b=6 and c=1

plug it in and solve the equations

Answer:

C(h) = 1+.25h

Step-by-step explanation:

Total cost = flat fee plus .25 times h  ( where h is the number of hours)

C(h) = 1+.25h

Answer:

B or A

But i would go with B

Step-by-step explanation:

Answer:

A. 14 units

Step-by-step explanation:

You can just count blocks down and right. (vertical and horizontal)

The mean number of people living in a household was 6.208, indicating that the average household size in South Africa is approximately six people.

The Census At School survey project collected data from an SRS of 48 South African students to estimate the number of people living in South African households.

The standard deviation of 2.576 indicates that there is considerable variation in household size, with some households having fewer than four people and others having more than eight people.

The sample size of 48 is relatively small compared to the total population of South Africa, which is over 58 million people. Therefore, the estimates based on this sample may not accurately reflect the entire population. However, the use of random sampling techniques, such as SRS, helps to minimize bias and increase the representativeness of the sample.

Overall, the data collected from the Census At School survey project provides a valuable insight into the average household size in South Africa. This information can be used by policymakers and researchers to inform decisions regarding housing, healthcare, and other public services.

The Complete question is:

How many people live in South African households? To find out, we collected data from an SRS of 48 out of the over 700,000 South African students who took part in the CensusAtSchool survey project. The mean number of people living in a household was 6.208; the standard deviation was 2.576.

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Answer:

\(y = (-3/2)\, x + (-2)\).

Step-by-step explanation:

If \((x_{0},\, y_{0})\) is on the equation of the line \(y = m\, x + b\), then substituting \(x = x_{0}\) and \(y = y_{0}\) into the equation would still give an equality: \(y_{0} = m\, x_{0} + b\).

In this question, since \((-2,\, 1)\) is a point on the line \(y = m\, x + b\), equality shall still hold after substituting in \(x = (-2)\) and \(y = 1\):

\(1 = m\times (-2) + b\).

Similarly, since \((2,\, -5)\) is a point on this line, equality shall still hold after substituting in \(x = 2\) and \(y = (-5)\):

\((-5) = m\times 2 + b\).

The unknowns of both equations are \(m\) and \(b\).

Solve this system of two equations and two unknowns:

\(\left\lbrace\begin{aligned}& (-2)\, m + b = 1\\ & 2\, m + b = (-5)\end{aligned}\right.\).

\(\left\lbrace\begin{aligned}& m = -\frac{3}{2} \\ & b = -2\end{aligned}\right.\).

Therefore, the equation of this line would be:

\(y = (-3/2)\, x + (-2)\).

Using proportional relationships, we can say that They will walk 12 laps and run 20 laps for a total of 32 miles.

In a direct proportional relationship, the output variable is found by the multiplication of the input variable and the constant of proportionality k, as follows:

y = kx.

Given that we know this, they walk 3/8 of the 8 miles that make up the complete distance. Run 5/8 of the route.

The following are the proportional relationships for the distances:

For a total distance of 32 miles, the distances walked and run are given:

therefore, They will walk 12 laps and run 20 laps for a total of 32 miles as per the proportional relation.

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Answer:

15x -45y +180

Step-by-step explanation:

5(3x)= 15x

5(26)= 130

5(-9y)= -45y

5(10)= 50

combine like terms:

15x - 45y +180

Answer:1

Step-by-step explanation:

twice a number minus a second number is -1. Twice the second number added to three times the first number is 9. find the two numbers. System of Equations is how we are supposed to solve this word problem.

Here is the completed table:

Name of the food                         Price with 15% profit

Apple (whole)                                    $9.20

Banana  (whole)                                 $8.34

Chocolate  (whole)                             $6.90

Chocolate chip ( 1 dozen)                   $5.46

Oatmeal ( 1 dozen)                               $5.75

Pecan  (whole)                                       $11.50

Pumpkin  (whole)                                    $13.80

Snickerdoodle  ( 1 dozen)                       $4.89

Vanilla  (whole)                                      $5.18

Percentage is used to represent statistics. Percentage means to rewrite a number per hundred. To convert a number to percentage, multiply the number by 100. The sign that is used to represent percentage is %.

Profit is the excess of the cost of production over the price at which the good is sold.

Profit = ( 1 + targeted profit) x cost

= (1 + 0.15) x cost

1.15 x cost

Profit on Apple (whole) = 1.15 x 8 = $9.20

Profit on Banana  (whole) = 1.15 x 7.25 = $8.34

Profit on Chocolate  (whole) = 1.15 x 6 = $6.90

Profit on Chocolate chip ( 1 dozen) = 1.15 x 4.75 = $5.46

Profit on Oatmeal ( 1 dozen) = 1.15 x 5 = $5.75

Profit on Pecan  (whole) = 1.15 x 10 = $11.50

Profit on Pumpkin  (whole) = 1.15 x 12 = $13.80

Profit on Snickerdoodle  ( 1 dozen)= 1.15 x 4.25 =$4.89

Profit on Vanilla  (whole) = 1.15 x 4.5 = $5.18

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Answer:

the price was reduced by 25%

Step-by-step explanation:

60 - 45 = 15

15 is what percent of 60?

15/60 = .25 x 100 = 25%

also can notice that 15 is 1/4 of 60, so it is equal to 25%.

Answer: Yes, No Yes, No