1
answer
162
views
12
Problem

For access to Textbook Solutions, a Class+ or Grade+ subscription is required.

Textbook Expert
Textbook ExpertVerified Tutor
7 Dec 2021

Given information

What is the  of   if it is  standard deviations to the left of the mean?

Step-by-step explanation

Step 1.

For the random variable defined as  the  is given by, 

  

The  tells the position of  with respect to the mean .  

When  is positive,  is above or right of the mean, and when  is negative,  is below or left of the mean.

Given that,  and the  is standard deviations to the right of the mean, therefore

 

Now, we use the formula for the 

 

For the standard normal distribution , therefore

 .

Hence, the is .

Unlock all Textbook Solutions

Already have an account? Log in
Start filling in the gaps now
Log in