toe considered unusual. For a sample of n=75. find the probabily of a sample mean being greater than 228 if j=227 and a a 3.7. For a nample of n=75, the probability of a sample mean being greater than 228 if μ=227 and a=3.7 is (Round to four decimal places as needed.) Would the given sample mean be considered unusual? The sample mean be considered unusual because if within the range of a usual evert, namily within of the mean of the sample means.