4. Michael is running for president. The proportion of voters who favor Michael is 0.8. A simplerandom sample of 100 voters is taken. Assume that n/N < 0.05. Essay Question:4(a). Show the sampling distribution of p. Explain your answers carefully.MacBook Pro

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Answered: 4(a). Show the sampling distribution of…

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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Complete parts (a) through (d) for the sampling distribution of the sample mean shown in the accompanying graph. Click the icon to view the graph. Sampling Distribution (a) What is the value of u;? The value of u; is 500. (b) What is the value of o;? The value of o; is 40. (c) If the sample size is n = 9, what is likely true about the shape of the population? A. The shape of the population is skewed left. 460 500 540 B. The shape of the population is approximately normal. The distribution is normal. The locations of the C. The shape of the population is skewed right. peak and inflection points are shown. D. The shape of the population cannot be determined. (d) If the sample size is n = 9, what is the standard deviation of the population from which the sample was drawn?
Teachers want to know which night each week their students are doing most of their homework. Most teachers think that students do homework equally throughout the week. Suppose a random sample of 56 students were asked on which night of the week they did the most homework. The results were distributed as described in the table. Sunday Monday Tuesday Wednesday Thursday Friday Saturday Number of 11 8 10 7 10 5 Students From the population of students, do the nights for the highest number of students doing the majority of their homework occur with equal frequencies during a week? What type of hypothesis test should you use? Test with a significance level of 0.05.
NEED HELP WITH: E, F, G
Describe the sampling distribution of p. Assume the size of the population is 25,000. n=800, p=0.5 Choose the phrase that best describes the shape of the sampling distribution of p below. A. Approximately normal because n≤0.05N and np(1−p)<10. B. Approximately normal because n≤0.05N and np(1−p)≥10. C. Not normal because n≤0.05N and np(1−p)≥10. D. Not normal because n≤0.05N and np (1-p)<10
Complete parts (a) through (d) for the sampling distribution of the sample mean shown in the accompanying graph. Click the icon to view the graph. (a) What is the value of u;? The value of u; is 600. (b) What is the value of o;? The value of o; is 30. (c) If the sample size is n= 9, what is likely true about the shape of the population? O A. The shape of the population is skewed left. O B. The shape of the population is skewed right. C. The shape of the population is approximately normal. O D. The shape of the population cannot be determined. (d) If the sample size is n= 9, what is the standard deviation of the population from which the sample was drawn? The standard deviation of the population from which the sample was drawn is
An online retailer would like to know whether the proportion of customers who visit the site and make a purchase is different than 50%. A simple random sample of customers is taken. The results of the sample are shown below.
Describe the sampling distribution of p. Assume the size of the population is 20,000. n= 900, p = 0.6 ..... Choose the phrase that best describes the shape of the sampling distribution of p below. O A. Not normal because ns0.05N and np(1 - p) 10. Determine the mean of the sampling distribution of p. Ha = (Round to one decimal place as needed.) Determine the standard deviation of the sampling distribution of p. (Round to three decimal places as needed.)
A 20 question multiple choice exam was given to a class. The distribution below is for the number of wrong out of twenty. Number Wrong 0 1 2 3 4 5 6 7 8 P(X) ??? 0.07 0.1 0.14 0.13 0.2 0.17 0.03 0.01 Find the missing value from the table. 0.140.14 0.150.15 0.130.13 0.160.16
A survey asks questions about one's happiness and health. One would think that health plays a role in one's happiness. Use the data in the accompanying table to determine whether healthier people tend to also be happier. Treat level of health as the explanatory variable. E Click the icon to view the data table. Create a conditional distribution for the data. Level of Health Data table Level of Happiness Not too happy Poor Fair Good Excellent Poor Fair Good Excellent Pretty happy Not too happy Pretty happy Very happy 1,376 1,629 9,642 696 732 Very happy 950 3,817 5,185 345 1,372 4,520 5,085 Total (Round to three decimal places as needed.) Print Done
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