"Score: 0710 0/ 10 answered Question 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 $132,000. Assume the standard deviation is $40,000. Suppose you take a simple random sample of 47 graduates. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N b. What is the distribution of ? - N) .c. For a single randomly selected graduate, find the probability that her salary is between $130,948 and $135,565. d. For a simple random sample of 47 graduates, find the probability that the average salary is between $130,948 and $135,565. e. For part d), is the assumption of normal necessary? O Yes No Submit