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9 November, 11:05

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

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  1. 9 November, 11:11
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    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
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