A sociologist found that in a sample of 50 retired
A sociologist found that in a sample of 50 retired men, the average number of jobs they had during their lifetimes was 7.2. The population standard deviation is 2.1.
a. Find the best point estimate of the mean.
b. Find the 95% confidence interval of the mean number of jobs.
c. Find the 99% confidence interval of the mean number of jobs.
d. Which is smaller? Explain why.
Membership TRY NOW
  • Access to 800,000+ Textbook Solutions
  • Ask any question from 24/7 available
    Tutors
  • Live Video Consultation with Tutors
  • 50,000+ Answers by Tutors
OR
Relevant Tutors available to help