Section 5.4 (please help with TI-84 calculator) :)
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n=61, find the probability of a sample mean being less than 20.1 if mean is 20 and standard deviation is 1.18.
For a sample of n=61, the probability of a sample mean being less than 20.1 if mean is 20 and standard deviation is 1.18.
Round to 4 decimal places
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