celesteh12

2022-10-13

usiness Weekly conducted a survey of graduates from several top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is $172,000. Assume the standard deviation is $36,000. Suppose you take a simple random sample of 16 graduates. **Round all answers to four decimal places if necessary.**

- What is the standard deviation of distribution of $X$?
- What is the standard deviation of $\overline{X}$?
- For a single randomly selected graduate, find the probability that her salary is between $164,800 and $177,900.
- For a simple random sample of 16 graduates, find the probability that the average salary is between $164,800 and $177,900.
- For part d), is the assumption of normal necessary? No or Yes

Don Sumner

Skilled2023-05-29Added 184 answers

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