bronzeeel679Lv1
13 Nov 2021
Problem 75
Page 508
Section: HOMEWORK
Chapter 9: HYPOTHESIS TESTING WITH ONE SAMPLE
Textbook ExpertVerified Tutor
13 Nov 2021
Given information
The population standard deviation of the ages of smokers = 2.1; & the mean of the ages of smokers =19; The sample size(n)=40;
Step-by-step explanation
Step 1.
First, we will identify 
and 
;
: The mean age when smokers first start smoking is at least 19 years old 
: The mean age when smokers first start smoking is younger than 19 years old 
Here, alpha 
=0.05;
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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208
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