   Chapter 3, Problem 16P 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 = 7 scores has a mean of M = 5. After one new score is added to the sample, the new mean is found to be M = 6. What is the value of the new score? (Hint: Compare the values for ∑X before and after the score was added.)

To determine

To Find: The value of new score which is added to an original sample of 7 scores.

Explanation

Given info:

A sample of 7 scores has a mean 5. After a new score is added, the new mean is 6.

Calculation:

The formula for the mean is:

M=XnX=M×n

Substitute M=5 and n=7 in the formula.

X=5×7=35</

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