b) What score would an applicant need in order to be at the 90th percentile for the exam? 4) Suppose New York City has an average police response time of 8.5 minutes, with a standard deviation of 3...

Extracted text: b) What score would an applicant need in order to be at the 90th percentile for the exam? 4) Suppose New York City has an average police response time of 8.5 minutes, with a standard deviation of 3 minutes. You select a random sample of 64 calls to dispatch and calculate the response time for each. What's the probability that the mean of their response times is less than 8 minutes? Include a diagram when answering this question.