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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
19 Nov 2021

Given information

Suppose  What value of  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 mean .  

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

As the given information reveals the following values are noted:

 

Using the score formula to find the value of , it gives

 

Hence, the value of is .  

 

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