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Author Question: Given that the random variable X is normally distributed with a mean of 80 and a standard deviation ... (Read 88 times)

penza

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on: Jun 24, 2018
Given that the random variable X is normally distributed with a mean of 80 and a standard deviation of 10, P(85 X 90) is:
 a. 0.5328 b. 0.3413
  c. 0.1915 d. 0.1498

Question 2

The power of a test is the probability of rejecting the null hypothesis when the alternative hypothesis is true.
 a. True
  b. False
   Indicate whether the statement is true or false


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frankwu0507

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

d

Answer to Question 2

TRUE


penza

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Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

shailee

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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