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26 October, 21:56

The fitness instructor is concerned with pretest to posttest differences in percent body fat for subjects involved in water aerobics training class. The correct statistic the teacher should use to examine this mean difference isa. ttest for independent groupsb. ttest for dependent groupsc. chi-squared. one-way

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  1. 27 October, 00:05
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    T-test for dependent groups

    Explanation:

    This is because this type of test compares the means of two related groups to see if there is a statistically significant difference between these means.

    A T-test for dependent groups is an example of a "within-subjects" or "repeated-measures" test. This means that the same participants are tested more than one time. "Related groups" indicates that the same participants are present in both groups.
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