   Chapter 3, Problem 12P Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

Solutions

Chapter
Section Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

A sample of n = 15 scores has a mean of M = 6. One person with a score of X = 22 is added to the sample. What is the value for the new sample mean?

To determine

To Find: The value of new sample mean when a score with a value x=22 is added.

Explanation

Given info:

A sample of 15 scores has mean 6.

Calculations:

The formula for mean is:

M=XnX=M×n

Substitute the values M=6 and n=15 in the formula.

X=6×15=90

Now, adding a score with x=22 implies

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