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 $149,000. Assume the standard deviation is $33,000. Suppose you take a simple random sample of 6 graduates. Round all answers to four decimal places if necessary. What is the distribution of XX? XX ~ N(Correct,Correct) What is the distribution of ¯xx¯? ¯xx¯ ~ N(Correct,Correct) For a single randomly selected graduate, find the probability that her salary is between $154,692 and $171,228. Correct

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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 $149,000. Assume the standard deviation is $33,000. Suppose you take a simple random sample of 6 graduates. Round all answers to four decimal places if necessary.

  1. What is the distribution of XX? XX ~ N(Correct,Correct)
  2. What is the distribution of ¯xx¯? ¯xx¯ ~ N(Correct,Correct)
  3. For a single randomly selected graduate, find the probability that her salary is between $154,692 and $171,228. Correct
  4. For a simple random sample of 6 graduates, find the probability that the average salary is between $154,692 and $171,228. Incorrect
  5. For part d), is the assumption of normal necessary? NoYes
  6. '
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