[Answered] If Z is a standard normal random variable, then P(-1.25 Z -0.75 ) is: A) 0.6678 B) 0.1056 C) ...

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Author Question: If Z is a standard normal random variable, then P(-1.25 Z -0.75 ) is: A) 0.6678 B) 0.1056 C) ... (Read 30 times)

mydiamond

Hero Member
Posts: 804

on: Jun 24, 2018

If Z is a standard normal random variable, then P(-1.25 Z -0.75 ) is:

A) 0.6678
B) 0.1056
C) 0.2266
D) 0.1210

Question 2

In testing for the differences between the means of two independent populations, we assume that the 2 populations each follow a normal distribution.

Indicate whether the statement is true or false

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Yixagurpuldink

Sr. Member
Posts: 341

Reply #1 on: Jun 24, 2018

Answer to Question 1

D

Answer to Question 2

TRUE

mydiamond

Member
Posts: 804

Reply 2 on: Jun 24, 2018

Thanks for the timely response, appreciate it

okolip

Member
Posts: 362

Reply 3 on: Yesterday

TYSM

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Author Question: If Z is a standard normal random variable, then P(-1.25 Z -0.75 ) is: A) 0.6678 B) 0.1056 C) ... (Read 30 times)

mydiamond

If Z is a standard normal random variable, then P(-1.25 Z -0.75 ) is: A) 0.6678 B) 0.1056 C) ...

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Yixagurpuldink

If Z is a standard normal random variable, then P(-1.25 Z -0.75 ) is: A) 0.6678 B) 0.1056 C) ...

mydiamond

okolip