Chapter 9, Problem 12P

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10th Edition

Frederick J Gravetter + 1 other

ISBN: 9781305504912

Textbook Problem

To evaluate the effect of a treatment, a sample of
*? *

b. If the sample variance is

c. Comparing your answer for pans a and *b, *how does the variability of the scores in the sample influence the outcome of a hypothesis test?

To determine

To test for the significance of effect of treatment on a sample which results into fixed mean but for varying value of sample variance?

Explanation

**Given:**

a) n=8, M=35, μ=40,

b) n=8, M=35, μ=40,

**Formula used:**

In both the cases, for testing the significance we use t test for single mean. Firstly we define null and alternative hypothesis, which is,

Null hypothesis: Ho= there is no significant effect of the treatment.

Alternative hypothesis: H_{1}= there is significant effect of the treatment.

OR

Null hypothesis: H_{o}: μ = 40

Alternative hypothesis: H_{1}: μ

And then calculate the t value and check for its possible acceptance and rejection on the basis of tabulated t value of given level of significance and degree of freedom

t statistics is given by t=

**Calculation:**

a) t=

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