[Answered] Given that Z is a standard normal variable, the variance of Z: a. is always greater than 2.0. b. ...

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Shelles

Hero Member
Posts: 582

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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Marked as best answer by a Subject Expert

wuly

Sr. Member
Posts: 327

Reply #1 on: Jun 24, 2018

Answer to Question 1

C

Answer to Question 2

B

Shelles

Hero Member
Posts: 582

Reply #2 on: Jun 24, 2018

Thank you

wuly

Sr. Member
Posts: 327

Reply #3 on: Jun 24, 2018

Happy to help you

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