A Single Population Mean Using the Normal Distribution · Exercise 29
The mean age for all Foothill College students for a recent fall term was 33.2. The population standard deviation has been pretty consistent at 15. Suppose that 25 winter students were randomly selected. The mean age for the sample was 30.4. We are interested in the true mean age for winter Foothill College students. Let X = the age of a winter Foothill College student.
As a result of your answer to, state the exact distribution to use when calculating the confidence interval.
OpenStax, Statistics · §8.1 A Single Population Mean Using the Normal Distribution · Exercise 29
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