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    Test of hypothesis using dependent samples

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    Five heart patients were placed on a special diet to lose weight. Their weights (in kilograms) were recorded before the diet and one month after the diet. The following data was obtained.

    Patient Weight Before Weight After
    1 62 59
    2 65 63
    3 88 78
    4 76 75
    5 68 65

    Do these data suggest that the special diet is effective in reducing weights?
    Formulate and test the appropriate hypotheses at an α= 0.05 level of significance.

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    Solution Summary

    The solution tests the hypothesis that the special diet is effective in reducing weights.