Author Question: Consider an infinite population with a mean of 160 and a standard deviation of 25 . A random sample ... (Read 122 times)

MirandaLo

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Consider an infinite population with a mean of 160 and a standard deviation of 25 . A random sample of size 64 is taken from this population. The standard deviation of the sample mean equals:
 a. 25 c. 25/64
  b. 25/64 d. None of these choices.

Question 2

The probability distribution of the error variable is normal, with mean E() = 0, and standard deviation  =1.
  Indicate whether the statement is true or false



xiaomengxian

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Answer to Question 1

C

Answer to Question 2

F



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