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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 =Tr'5. nd the probability of a sample mean being greater than 229 if p = 225 and cr =6.1. Fora sample of n=75' the probability of a sample mean being greater than 229 ii p =228 and o = 6.1 is :| (Round to four decimal places as needed.) Would the given sample mean be considered unusual? The sample mean E be considered unusual because it I: within the range of a usual event' namely within lj of the mean of the sample means. Assume a member is selected at random from the population represented by the AT Critical Reading Scores graph . Find the probability that the member selected at random is from the shaded area of the graph . Assume the variable x is normally distributed 200* 375 1 = 513 1 = 109 Q a 20 375 80 Score The probability that the member selected at random is from the shaded area of the graph is Round to four decimal places as needed . )