Chapter 7, Problem 8P

### Essentials of Statistics for the B...

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

Chapter
Section

### Essentials of Statistics for the B...

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

# For a sample of n = 25 scores, what is the value of the population standard deviation (σ) necessary to produce each of the following a standard error values?a. σM = 10 points?b. σM= 5 points?c. σM= 2 points?

a.

To determine
The value of population standard deviation.

Explanation

Given info:

The numbers of scores in sample is n=25 and the standard error is σM=10.

Calculation:

If n and σM represents the numbers of scores in each sample and standard error of sample means respectively. Then,

n=25σM=10

Let σ is the population standard deviation.

Standard error measures the distance expected on an average between population mean and sample means

b.

To determine
The value of population standard deviation.

c.

To determine
The value of population standard deviation.

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