Suppose the Distribution of Personal Daily Water Usage in New

Multiple Choice

Suppose the distribution of personal daily water usage in New York City is normally distributed with a mean of 15 gallons and a variance of 25 gallons. Because of a current problem with the distribution of water to its citizens, the mayor wants to give a city tax rebate to the 15 percent of the population who use the least amount of water. What should he use as the water limit for a person to qualify for a city tax rebate?

A) 9.818
B) 15.00
C) 12.20
D) 10.25