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Author Question: Given that Z is a standard normal variable, the variance of Z: a. is always greater than 2.0. b. ... (Read 72 times)

Shelles

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on: Jun 24, 2018
Given that Z is a standard normal variable, the variance of Z:
 a. is always greater than 2.0.
  b. is always greater than 1.0.
  c. is always equal to 1.0.
  d. cannot assume a specific value.

Question 2

Given that Z is a standard normal random variable, the area to the left of a value z is expressed as
 a. P(Z  z)
  b. P(Z  z)
  c. P(0  Z  z)
  d. P(Z  -z)


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wuly

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

C

Answer to Question 2

B


Shelles

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Reply #2 on: Jun 24, 2018
Thank you :)


wuly

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Reply #3 on: Jun 24, 2018
Happy to help you


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