Chapter 10, Problem 13P

### 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

# A researcher conducts an independent-measures study comparing two treatments and reports the t statistic t (25) = 2.071.a. How many individuals participated in the entire study?b. Using a two-tailed test with α = .05, is there a significant difference between the two treatments?c. Compute r2 to measure the percentage of variance accounted for by the treatment effect.

a.

To determine

To Find: The number of individuals participated in the study.

Explanation

Given info:

Independent-measures study is conducted, and results are reported as t(25)=2.071

Calculation:

The degree of freedom is calculated as:

df=n1+

b.

To determine

To Find: If there is a significant differencebetween the two treatmentsusing two-tailed test at α=0.05 for the given question.

c.

To determine

To Find: The value of r2 for the given question.

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