Q3) Suppose that you have a sample of 100 values from a population with mean u = 500 and with standard deviation O = 80. a. What is the probability that the sample mean will be in the interval (490,...

Extracted text: Q3) Suppose that you have a sample of 100 values from a population with mean u = 500 and with standard deviation O = 80. a. What is the probability that the sample mean will be in the interval (490, 510)? b. Give an interval that covers the middle 95% of the distribution of the sample mean.