[Answered] If the random variable X is normally distributed with a mean of 75 and a standard deviation of 8, ...

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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 89 times)

rosent76

Hero Member
Posts: 516

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

Sr. Member
Posts: 343

Reply #1 on: Jul 24, 2018

Answer to Question 1

B

Answer to Question 2

F

rosent76

Hero Member
Posts: 516

Reply #2 on: Jul 24, 2018

Thanks

dmurph1496

Sr. Member
Posts: 343

Reply #3 on: Jul 24, 2018

Welcome

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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 89 times)

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