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 0.30 hour (18 minutes) per day using a computer for leisure. Individuals ages 15 to 19 spend 0.8 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 16 minutes per day using a computer for leisure. (Round your answers to 4 decimal places.) Proportion Age 75 and over Ages 15 to 19 b. More than 2 hours. (Round your answers to 4 decimal places.) Age 75 and over Ages 15 to 19 Proportion