Mathematics, 22.10.2020 15:01 scoutbuffy8954

A sociologist found that in a random sample of 50 retired men, the average number of jobs they had during their lifetime was 7.2. The population standard deviation is 2.1. Assume the population is normally distributed. Find the 99% confidence interval of the mean number of jobs.

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A sociologist found that in a random sample of 50 retired men, the average number of jobs they had d...