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Author Question: If the random variable X is normally distributed with a mean of 75 and a standard deviation of 8, ... (Read 88 times)

rosent76

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on: Jul 24, 2018
If the random variable X is normally distributed with a mean of 75 and a standard deviation of 8, then P(X >= 75) is:
 a. 0.125
  b. 0.500
  c. 0.625
  d. 0.975
  e. 0.250

Question 2

Suppose in testing a hypothesis about a proportion, the z test statistic is computed to be 1.92 . The null hypothesis should be rejected if the chosen level of significance is 0.01 and a two-tailed test is used.
  Indicate whether the statement is true or false


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dmurph1496

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Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

F


rosent76

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Reply #2 on: Jul 24, 2018
Thanks


dmurph1496

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Reply #3 on: Jul 24, 2018
Welcome :)


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