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The following scores show the amount of weight lost (in pounds) by each client of a weight control clinic during the last year:
a. Construct a frequency distribution of grouped scores with approximately 10 intervals.
b. Construct a histogram of the frequency distribution constructed in part a.
c. Is the distribution skewed or symmetrical? If it is skewed, is it skewed positively or negatively?
d. Construct a stem and leaf diagram with the last digit being a leaf and the first digit a stem. Repeat stem values twice.
e. Which diagram do you like better, the histogram of part b or the stem and leaf diagram of part d? Explain.
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How would you interpret these results in terms of the likely precision of the sample means as estimators of their respective population means?
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