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    P-Value of Weight Loss

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    31. A new weight-watching company, Weight Reducers International, advertises that those
    who join will lose, on the average, 10 pounds the first two weeks with a standard deviation
    of 2.8 pounds. A random sample of 50 people who joined the new weight reduction program
    revealed the mean loss to be 9 pounds. At the .05 level of significance, can we
    conclude that those joining Weight Reducers on average will lose less than 10 pounds?
    Determine the p-value

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    Solution Preview

    See the attached file. Thanks


    Step 1: Set the hypothesis. The claim made will be the alternate hypothesis.
    H0: = 10
    H1: < 10

    Step 2: Set the Level of Significance
    Level of significance a = 0.05

    Step 3: Determine the type of ...

    Solution Summary

    This solution conducts a statistical analysis by stating the null and alternative hypothesis, setting the level of significance, calculating the test statistic, comparing it to the p-value and making a final decision in accepting or rejecting the null hypothesis.