The numbers of hours some college students spend watching television during the summer are described by the

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The numbers of hours some college students spend watching television during the summer are described by the density histogram in Fig. 94.
The numbers of hours some college students spend watching television

a. Compute the area of each of the five bars in the density histogram.
b. Find the total area of the five bars.
c. Explain why the total area of the bars of any density histogram is always equal to the result you found in part (b).
d. Once the fall semester begins, the center of the distribution decreases by 2 hours and the distribution becomes narrower. Sketch a density histogram that might describe the TV viewing distribution during the fall semester.

Distribution
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