Textbook ExpertVerified Tutor
11 Dec 2021
Given information
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.
25 students were randomly selected and the sample mean age was 30.4.
Step-by-step explanation
Step 1.
is sample mean and is an unbiased estimate of population mean.
Therefore is estimating population mean
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