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The Bureau of Labor Statistics’ American Time Use Survey showed that the amount of time spent...

The Bureau of Labor Statistics’ American Time Use Survey showed that the amount of time spent using a computer for leisure varied greatly by age. Individuals age 75 and over averaged 0.15 hour (9 minutes) per day using a computer for leisure. Individuals ages 15 to 19 spend 1.0 hour per day using a computer for leisure. If these times follow an exponential distribution, find the proportion of each group that spends:

  1. Less than 8 minutes per day using a computer for leisure. (Round your answers to 4 decimal places.)

    Age 75 and over: 0.5890 (correct) Ages 15 to 19: _________

  2. More than 2 hours. (Round your answers to 4 decimal places.) Age 75 and over: 0.0000 (correct) Ages 15 to 19: _________

3. Between 16 minutes and 48 minutes using a computer for leisure. (Round your answers to 4 decimal places.)      

Amount of times for individuals ages 75 and over: 3.21 minutes (correct).   Amount of times for individuals ages 15 to 19: __________

Math   Statistics-And-Probability   
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