The Bureau of Labor Statistics American Time Use Survey show

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 0.9 hour per day using a computer for leisure. If these times follow an exponential distribution, find the proportion of each group that spends

Solution

Let times follow an exponential distribution, then the proportion of each groups follows poisson distribution with mean 9 mintues for age 75 and over and 54 mintues for age 15 to 19.