A sociologist found that in a random 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. Find the best point estimate of the population mean. Find the 95% confidence interval of the mean number of jobs.
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So, the best point estimate of the population mean is 7.2 jobs. Show more…
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In a sample of 50 retirees, the average number of jobs they had during their lifetimes was 7.2. The population standard deviation is 2.1. Find the best point estimate of the mean: Find the 95% confidence interval of the mean number of jobs: Find the 99% confidence interval of the mean number of jobs.
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A sociologist found that in a sample of 49 retired men, the average number of jobs they had during their lifetimes was 7.2. The standard deviation of the sample was 2.1. Find the 90% confidence interval of the mean for the number of jobs a man had during his lifetime
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