(b) What is the probability that a simple random sample of 60 unemployed individuals will provide a sample mean within 1 week of the population mean? (Round your answer to four decimal places.) 0.9432 (c) What is the probability that a simple random sample of 60 unemployed individuals will provide a sample mean within - week of the population mean? (Round your answer to four decimal places.) 0.7242
(b) What is the probability that a simple random sample of 60 unemployed individuals will provide a sample mean within 1 week of the population mean? (Round your answer to four decimal places.) 0.9432 (c) What is the probability that a simple random sample of 60 unemployed individuals will provide a sample mean within - week of the population mean? (Round your answer to four decimal places.) 0.7242
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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solve only parts B and C
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Transcribed Image Text: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 17.5 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 17.5 weeks and that the population standard deviation is
6 weeks. Suppose you would like to select a sample of 60 unemployed individuals for a follow-up study.
(a) Show the sampling distribution of x, the sample mean average for a sample of 60 unemployed individuals.
weeks
15.1 15.9 16.7 17.5 18.3 19.1 19.9
weeks
weeks
- 2.4 -1.6 -0.8
0.8
1.6 2.4
weeks
57.6 58.4 59.2 60
60.8 61.6 62.4
-0.5 5.5 11.5 17.5 23.5 29.5 35.5
(b) What is the probability that a simple random sample of 60 unemployed individuals will provide a sample mean within 1 week of the population mean? (Round your answer to four decimal places.)
0.9432
(c) What is the probability that a simple random sample of 60 unemployed individuals will provide a sample mean within
week of the population mean? (Round your answer to four decimal places.)
0.7242
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