The proportion of all US adults who eat popcorn when they go to the movie theater is p= 0.87. A random sample of 20 US adults was selected and asked if they eat popcorn when they go to the movie theater. Which of the following is the shape of the sampling distribution of B ? O The sampling distribution of B is approximately Normal because np =17.4> 10. Because n(1-p) = 20(1-0.87) = 2.6 < 10, the sampling distribution of B is not approximately Normal. The sampling distribution of B is skewed right and centered at 0.87. Because n(1-p) = 20(1-0.87) = 2.6 < 10, the sampling distribution of B is not approximately Normal. Because p %3D =0.87 is closer to 1 than 0, the sampling distribution of B is skewed to the left. O Because n(1-p) = 20(1-0.87) = 2.6 < 10, the sampling distribution of B is not approximately Normal. Because p = 0.87 is closer to 1 than 0, the sampling distribution of B is skewed to the right. Makhsand cen Save and Exit Next Submit

The proportion of all US adults who eat popcorn when they go to the movie theater is p= 0.87. A random sample of 20 US adults was selected and asked if they eat popcorn when they go to the movie theater. Which of the following is the shape of the sampling distribution of B ? O The sampling distribution of B is approximately Normal because np =17.4> 10. Because n(1-p) = 20(1-0.87) = 2.6 < 10, the sampling distribution of B is not approximately Normal. The sampling distribution of B is skewed right and centered at 0.87. Because n(1-p) = 20(1-0.87) = 2.6 < 10, the sampling distribution of B is not approximately Normal. Because p %3D =0.87 is closer to 1 than 0, the sampling distribution of B is skewed to the left. O Because n(1-p) = 20(1-0.87) = 2.6 < 10, the sampling distribution of B is not approximately Normal. Because p = 0.87 is closer to 1 than 0, the sampling distribution of B is skewed to the right. Makhsand cen Save and Exit Next Submit

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The Census Bureau gives this distribution for the number of people in American households in 2016. Family size 1 2 4 6. 7 Proportion 0.28 0.35 0.15 0.13 0.06 0.02 0.01 Note: In this table, 7 actually represents households of size 7 or greater. But for purposes of this exercise, assume that it means only households of size exactly 7. Suppose you take a random sample of 4000 American households. About how many of these households will be of size 2? Sizes 3 to 7? The number of households of size 2 is about The number of households of size 3 to 7 is about
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Let's examine the mean of the numbers 1, 2, 3, 4, 5, 6, 7, and 8 by drawing samples from these values, calculating the mean of each sample, and then considering the sampling distribution of the mean. To do this, suppose you perform an experiment in which you roll an eight-sided die two times (or equivalently, roll two eight-sided dice one time) and calculate the mean of your sample. Remember that your population is the numbers 1, 2, 3, 4, 5, 6, 7, and 8. The true mean (µ) of the numbers 1, 2, 3, 4, 5, 6, 7, and 8 is , and the true standard deviation (o) is The number of possible different samples (each of size n = 2) is the number of possibilities on the first roll (8) times the number of possibilities on the second roll (also 8), or 8(8) = 64. If you collected all of these possible samples, the mean of your sampling distribution of means (µM) would equal and the standard deviation of your sampling distribution of means (that is, the standard error or ɑm) would be The following chart…
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