You may need to use the appropriate appendix table or technology to answer this question. Barron's reported that the average number of weeks an individual is unemployed is 18.5 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 18.5 weeks and that the population standard deviation is 5 weeks. Suppose you would like to select a sample of 40 unemployed individuals fo a follow-up study. (a) Show the sampling distribution of x, the sample mean average for a sample of 40 unemployed individuals. weeks weeks 37.6 38.4 39.2 40 40.8 41.6 42.4 3.5 8.5 13.5 18.5 23.5 28.5 33.5 weeks weeks 16.1 16.9 17.7 18.5 19.3 20.1 20.9 -2.4 -1.6 -0,8 0.8 1.6 2.4 (b) What is the probability that a simple random sample of 40 unemployed individuals will provide a sample mean within 1 week of the population mean? (Round your answe to four decimal places.) (c) What is the probability that a simple random sample of 40 unemployed individuals will provide a sample mean within week of the population mean? (Round your answ to four decimal places.)
You may need to use the appropriate appendix table or technology to answer this question. Barron's reported that the average number of weeks an individual is unemployed is 18.5 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 18.5 weeks and that the population standard deviation is 5 weeks. Suppose you would like to select a sample of 40 unemployed individuals fo a follow-up study. (a) Show the sampling distribution of x, the sample mean average for a sample of 40 unemployed individuals. weeks weeks 37.6 38.4 39.2 40 40.8 41.6 42.4 3.5 8.5 13.5 18.5 23.5 28.5 33.5 weeks weeks 16.1 16.9 17.7 18.5 19.3 20.1 20.9 -2.4 -1.6 -0,8 0.8 1.6 2.4 (b) What is the probability that a simple random sample of 40 unemployed individuals will provide a sample mean within 1 week of the population mean? (Round your answe to four decimal places.) (c) What is the probability that a simple random sample of 40 unemployed individuals will provide a sample mean within week of the population mean? (Round your answ to four decimal places.)
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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