The US Bureau of Labor Statistics collects information on the ages of peoplein labor force. A random sample of 50 people from the population is selected, with samplemean ī = 36.4 years. Assuming the population standard deviation (of the ages) is 12.1 years.a) Find a 95% confidence interval for the population mean age u.b) Determine the sample size needed in order to be 95% confident that the populationmean u is within 0.5 year of the sample mean ?

It is given that Sample size n = 50 Sample mean M = 36.4 Population SD = 12.1 The critical value of…

Answered: a) Find a 95% confidence interval for…

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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also, what is the lower and upper limits ?

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a) Find a 95% confidence interval for the population mean age u. b) Determine the sample size needed in order to be 95% confident that the population mean u is within 0.5 year of the sample mean ?