6 Children Watching TV. The A. C. Nielsen Company reported in the Nielsen Report on Television that the mean weekly television viewing time for children aged 2–6 years is 24.85 hours.
Assume that the weekly television viewing times of such children are normally distributed with a standard deviation of 6.23 hours and apply the empirical rule to fill in the blanks.
a. Approximately 68% of all such children watch between ______ and ______ hours of TV per week.
b. Approximately 95% of all such children watch between ______ and ______ hours of TV per week.
c. Approximately 99.7% of all such children watch between ______ and ______ hours of TV per week.
d. Draw graphs similar to those in Fig. on page 283 to portray your results.
FIGURE Graphical display of the empirical rule for IQs
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