According to a survey in a country, 38% of adults do not have any credit cards. Suppose a simple random sample of 600 adults is obtained.(a) Describe the sampling distribution of p, the sample proportion of adults who do not have a credit card. Choose the phrase that best describes the shape of the sampling distribution of p below.O A. Not normalO B. Approximately normalDetermine the mean of the sampling distribution of p.HA ="P(Round to two decimal places as needed.)Determine the standard deviation of the sampling distribution of p.GA = (Round to three decimal places as needed.)(b) A certain town believes their residents are less likely to own credit cards. They take a random sample of 600 adults in their town. They find a sample proportion of 17. What is the probability of getting 17 or less?The probability is(Round to four decimal places as needed.)Would this be considered unusual?oDEweris).

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According to a survey in a country, 38% of adults do not have any credit cards. Suppose a simple random sample of 600 adults is obtained. (a) Describe the sampling distribution of p, the sample proportion of adults who do not have a credit card. Choose the phrase that best describes the shape of the sampling distribution of p below. O A. Not normal O B. Approximately normal Determine the mean of the sampling distribution of p HA= (Round to two decimal places as needed.) Determine the standard deviation of the sampling distribution of p. GA = (Round to three decimal places as needed.) (b) A certain town believes their residents are less likely to own credit cards. They take a random sample of 600 adults in their town. They find a sample proportion of 17. What is the probability of getting 17 or less? The probability is (Round to four decimal places as needed.) Would this be considered unusual? ORSwer(s 00 ENG

According to a survey in a country, 38% of adults do not have any credit cards. Suppose a simple random sample of 600 adults is obtained. (a) Describe the sampling distribution of p, the sample proportion of adults who do not have a credit card. Choose the phrase that best describes the shape of the sampling distribution of p below. O A. Not normal O B. Approximately normal Determine the mean of the sampling distribution of p HA= (Round to two decimal places as needed.) Determine the standard deviation of the sampling distribution of p. GA = (Round to three decimal places as needed.) (b) A certain town believes their residents are less likely to own credit cards. They take a random sample of 600 adults in their town. They find a sample proportion of 17. What is the probability of getting 17 or less? The probability is (Round to four decimal places as needed.) Would this be considered unusual? ORSwer(s 00 ENG

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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Describe the sampling distribution of p. Round to three decimal places when necessary. [ N = 21,000, n = 600, p = 0.6 ]
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9. If we take samples of size 110 from a population with proportion 0.39, comment on whether the sampling distribution follows a normal distribution. Explain.
Salaries for teachers in a particular state have a mean of $ 45000 and a standard deviation of $ 6700. a. If we randomly select 16 teachers from that district, can you determine the sampling distribution of the sample mean? Yes No If yes, what is the name of the distribution? The mean? This is not a decimal or integer value. The standard error? b. If we randomly select 74 teachers from that district, can you determine the sampling distribution of the sample mean? Yes No If yes, what is the name of the distribution? The mean? The standard error? c. For which sample size would I need to know that population distribution of X, teacher salaries, is normal in order to answer? d. Assuming a sample size of 74, what is the probability that the sampling error is within $1000. (In other words, the sample mean is within $1000 of the true mean.) e. Assuming a sample size of 74, what is the 90th percentile for the AVERAGE teacher’s salary? f. Assuming that teacher’s salaries are…