The Bureau of Labor Statistics’ American Time Use Survey showed that

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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 .20 hour (12 minutes) per day using a computer for leisure. Individuals ages 15 to 19 spend 1.3 hour per day using a computer for leisure. If these times follow an exponential distribution, find the proportion of each group that spends:

(a) 
Less than 10 minutes per day using a computer for leisure. (Round your answers to 4 decimal places.)

Proportion ________and ________.

(b) More than two hours. (Round your answers to 4 decimal places.) 

Proportion ________ and ________.

(c) 
Between 20 minutes and 60 minutes using a computer for leisure. (Round your answers to 4 decimal places.)

Proportion

(d) Find the 26th percentile. Seventy four percent spend more than what amount of time? (Round your answers to 2 decimal places.)

Amount of time for individuals age 75 and over minutes
Amount of time for individuals ages 15 to 19 minutes

  • 9 years ago
The Bureau of Labor Statistics’ American Time Use Survey showed that
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