   Chapter 3, Problem 14P 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 population of N = 15 scores has a mean of µ = 8. One score in the population is changed from X = 20 to X = 5. What is the value for the new population mean?

To determine

To Find: The value of new sample mean when a score is changed from 20 to 5.

Explanation

Given info:

A population of 15 scores has mean 8. One score in population changed from 20 to 5.

Calculations:

Let the 15 scores = X1, X2, X3, X4, X5, X6.....X14 and 15th score is X15=20.

The formula for sample mean is:

M=Xn

Substitute the values in the above formula

8=x1+x2+x3+x4+x5+x6.......+2015120=x1+x2+x3+x4+x5+x6+......+20100=x1+x2+x3+x4+x5+...........

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