The age when smokers first start from previous studies is normally distributed with a mean of 13 years oldwith a population standard deviation of 1.8 years old. A survey of smokers of this generation was done toestimate if the mean age has changed. The sample of 35 smokers found that their mean starting age was 14years old. Find the 90% confidence interval of the mean.

Sample size (n) = 35, sample mean (x̄) = 14 and population standard deviation (σ) = 1.8

Answered: The age when smokers first start from…

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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