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 = 60, find the probability of a sample mean being less than 20.2 if u = 20 and o = 1.24. 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 = 60, the probability of a sample mean being less than 20.2 if u = 20 and o = 1.24 is (Round to four decimal places as needed.) Would the given sample mean be considered unusual? The sample mean be considered unusual because it has a probability that is than 5%