Question: A weight-loss program enrolled 50 couples. In each couple, one spouse was identified as older based on date of birth. Select the test that would

  1. A weight-loss program enrolled 50 couples. In each couple, one spouse was identified as older based on date of birth. Select the test that would be used to answer, "Did the older spouse lose less weight than the younger spouse?" The data are normally distributed.

    Independent t-test

    Paired t-test

    Mann-Whitney U-test

    Wilcoxonmatched-pairs test

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