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 equals 70 find the probability of a sample mean being greater than 220 FU equals 219 and the deviation equals 5.7 for a sample N equal 70 the probability of a sample mean being greater than 220 if U equals 219 and a deviation equals 5.7 is. Round to 4 decimal places