a sociologist found that in a sample of 45 retired men, the average number of jobs they had during their lifetimes was 7.2. The population standard deviation is 2.3. Find the 90% confidence interval of the mean number of jobs. Round intermediate and final answers to one decimal place.
a sociologist found that in a sample of 45 retired men, the average number of jobs they had during their lifetimes was 7.2. The population standard deviation is 2.3. Find the 90% confidence interval of the mean number of jobs. Round intermediate and final answers to one decimal place.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 11PPS
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a sociologist found that in a sample of 45 retired men, the average number of jobs they had during their
lifetimes was 7.2. The population standard deviation is 2.3.
Find the 90% confidence interval of the
place.
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