Finding Probabilities In Exercises 15 & 16, the population mean and standard deviation are given. Find the indicated probability and determine whether the given sample mean would be considered unusual.

15. For a random sample of n = 64, find the probability of a sample mean being less than 24.3 when m = 24 and s = 1.25.

16. For a random sample of n = 100, find the probability of a sample mean being greater than 24.3 when m = 24 and s = 1.25.