Question

10.

In an independent-samples t test, the ________ is used rather than the ________.

Select one:

A. standard deviation; pooled variance

B. variance; pooled variance

C. pooled variance; standard deviation

D. standard deviation; variance

11.

Dr. Jameson wanted to know if IQ scores differed between male and female participants in his study. He gave 28 participants an IQ test and then compared IQ scores for gender differences. He hypothesized that there would be a statistically significant gender difference in IQ scores. Contrary to Dr. Jameson's hypothesis, there were no differences in IQ scores between men and women in his study. From the results of the study, Dr. Jameson must ________ the null hypothesis and ________ the research hypothesis.

Select one:

A. fail to reject; reject

B. reject; fail to reject

C. retest; reject

D. reject; retest

12.

Random assignment helps to:

Select one:

A. sensitize our measure of the dependent variable.

B. guarantee equal size groups.

C. remove all bias from a study.

D. equalize initial conditions.

Answer 1

Answers:-

10.

In an independent-samples t test, the pooled variance is used rather than the standard deviation.

11.

Dr. Jameson wanted to know if IQ scores differed between male and female participants in his study. He gave 28 participants an IQ test and then compared IQ scores for gender differences. He hypothesized that there would be a statistically significant gender difference in IQ scores. Contrary to Dr. Jameson's hypothesis, there were no differences in IQ scores between men and women in his study. From the results of the study, Dr. Jameson must fail to reject the null hypothesis and reject the research hypothesis.

Random assignment helps to:

Option. C) remove all bias from a study.