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Assigruments - BUSINESS STATISTICS Chapter 7: Homework
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A recent study reported that Americans spend an average of 340 minutes per day watching TV. Assume the distribution of minutes per
day watching TV follows a normal distribution with a standard deviation of 30 minutes.
a. What percent of the population watch more than 370 minutes per day? (Round your intermediate calculations and final answer to
2 decimal places.)
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Population watching TV more than 370 minutes per day
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b. What percent of the population watch more than 290 minutes per day? (Round your intermediate calculations and final answer to
2 decimal places.)
Population watching more than 290 minutes per day
c. What percent of the population watch between 290 hours and 370 hours? (Round your intermediate calculations and final answer
to 2 decimal places.)
Population watching TV between 290 hours and 370 hours
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