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 $126,000. Assume the...


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Business Weekly conducted a survey of graduates from<br>30 top MBA programs. On the basis of the survey,<br>assume the mean annual salary for graduates 10 years<br>after graduation is $126,000. Assume the standard<br>deviation is $44,000. Suppose you take a simple<br>random sample of 13 graduates. Round all answers to<br>four decimal places if necessary.<br>a. What is the distribution of X? X - N(d<br>b. What is the distribution of x? - N(<br>c. For a single randomly selected graduate, find the<br>probability that her salary is between $110,995<br>and $123,597.<br>d. For a simple random sample of 13 graduates,<br>find the probability that the average salary is<br>between $110,995 and $123,597.<br>e. For part d), is the assumption of normal<br>necessary? O No Yes<br>

Extracted text: 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 $126,000. Assume the standard deviation is $44,000. Suppose you take a simple random sample of 13 graduates. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N(d b. What is the distribution of x? - N( c. For a single randomly selected graduate, find the probability that her salary is between $110,995 and $123,597. d. For a simple random sample of 13 graduates, find the probability that the average salary is between $110,995 and $123,597. e. For part d), is the assumption of normal necessary? O No Yes

Jun 11, 2022
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