The population mean and standard deviation are given below. Find the required pr

Question

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-70, find the probability of a sample mean being less than 21.1 if -21 and 0-1.18. Click the icon to view page 1 of the standard normal table. Click the icon to view page 2 of the standard normal table For a sample of n = 70, the probability of a sample mean being less than 21.1 if = 21 and = 1.18 is (Round to four decimal places as needed.) Would the given sample mean be considered unusual? The s ample me ,not be considered unusual because it has a probability that is greater than 5%

Explanation / Answer

since the mean itself is 21, the probability of mean being less than 21 will be 0.5 which is the half of the curve on the left of mean (since complete curve has area of 1)

answer to 2nd part is correct

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