Question

A human factors psychologist wants to know if a new computer-generated voice is either easier or harder to comprehend than human speech. To test this, he gathers 30 volunteers and assigns each to one of two groups. Both groups hear a selection being read. One group's selection is read in the computer-generated voice, the other is read by a human. The results of the experiment, the number of words from the selection that were transcribed correctly, are presented below. Is there a difference in comprehensibility

Answer 1

Independent test using the t-test

Explanation:

Independent test using the t-test. The independent t-test compares the mean of two different groups. It determines whether there is any statistical evidence that is associated with the population means that is different. The independent t-test is a parametric test.

There are different names of these test areas:

• Independent t-test
• Independent measure t-test
• Independent sample two t-test
• Student t-test
• Two t-test
• Unpaired t-test
• Unrelated t-test
• Variables are being used named as
• Dependent variable/test variable
• Independent variable/Grouping variable