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.Which test was Dr.Jameson MOST likely to use to test his hypothesis?
A) paired-samples t test
B) z test
C) independent-samples t test
D) single-samples t test

Question

Quizplus · Accepted Answer

The independent-samples t test is used to compare means between two independent groups. In this case, the two groups are males and females, who are independent of each other. The paired-samples t test is used to compare means within the same group before and after treatment or under different conditions. The z test is used when the population mean and standard deviation are known. The single-samples t test is used to compare the mean of a single sample to a known population mean. None of these tests are applicable to Dr.Jameson's study. Therefore, the most appropriate option is the independent-samples t test.

DrJameson Wanted to Know If IQ Scores Differed Between Male