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Author Question: If the standard normal deviate of a random variable value of x = 2 is z = 2, while the standard ... (Read 98 times)

madam-professor

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If the standard normal deviate of a random variable value of x = 2 is z = 2, while the standard deviation of the random variable x equals 2, then the mean of x is:
 a. 6
  b. 4
  c. 8
  d. 2
  e. 0

Question 2

If you wish to estimate the difference between two population means using two independent large samples, the 90 confidence interval estimate can be constructed using which of the following critical values?
 a. 1.96
  b. 2.33
  c. 2.58
  d. 1.645
  e. 1.28



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Brenm

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Answer to Question 1

A

Answer to Question 2

D





 

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