How Do I Get The Population Standard Deviation Focus Dreams/tutorialoutletdotcom

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How Do I Get The Population Standard
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How Do I Get The Population Standard
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• what is the z test statistic? how do I get the
  population standard deviation?
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• The Survey of Study Habits and Attitudes (SSHA)
  is a psychological test that measures the
  motivation, attitudes, and study habits of
  college students. Scores range from 0 to 200 and
  follow (approximately) a Normal distribution,
  with mean of 115 and standard deviation 25. A
  researcher suspects that incoming freshmen have a
  mean µ, which is different from 115, because they
  are often excited yet anxious about entering
  college. To verify her suspicion, she tests the
  hypotheses
• H0 µ 115
• Ha µ ? 115.

3
How Do I Get The Population Standard
tutorialoutlet.com