Question 7 0.71/1 pt 0-2 @ Details Score on last try: 0.71 of 1 pts. See Details for more. > Next question You can retry this question below Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is $128,000. Assume the standard deviation is $41,000. Suppose you take a simple random sample of 45 graduates, Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( 128,000 41,000 b. What is the distribution of a? x - N( 128,000 c. For a single randomly selected graduate, find the probability that her salary is between $129,532 and $132,688. 0.0306 of d. For a simple random sample of 45 graduates, find the probability that the average salary is between $129,532 and $132, 688. e. For part d), is the assumption of normal necessary? Yes No Submit