Question: (for the two questions) A random sample of n = 4 scores is obtained from a normal population with = 20 and = 4. What

(for the two questions) A random sample of n = 4 scores is obtained from a normal population with= 20 and= 4.

What is the z-score associated with a sample meanxof 22?

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Which of the following is an unbiased estimate for the population proportion of high school graduates in Honolulu?

  • The number of high school graduates among a random sample of Honolulu residents
  • The fraction of high school graduates among a random sample of Honolulu residents
  • The fraction of high school graduates among a random sample of UH students
  • The number of high school graduates among a random sample of UH students

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