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A researcher records academic performance on students, given old and new teaching rubrics. She had hypothesized...

A researcher records academic performance on students, given old and new teaching rubrics. She had hypothesized that student performance (GPA) would improve when the students were introduced to the new teaching technique. If she uses a related samples t-test to test this hypothesis at .01 level of significance, then what will be the decision if she computes

t = 3.459

in a sample of 30 participants?

a) Retain the null hypothesis.

b) Reject the null hypothesis.    

c) A decision cannot be reached.

d) The new teaching method was not an effective way to improve grade performance.

Social-Sciences   psychology   
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Answer #1

Option D is an absolutely correct answer.

The new teaching method was not an effective way to improve grade performance.

Explanation:-

Because after computing the t test for the 30 participants where t value is 3.459 which is greater than the answers values.

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