answer the following questions

Statistics Quiz 6b Name 1. Monthly utility bills in a city are normally distributed, with a mean of $104 and a standard deviation of $12. A utility bill is randomly selected. Find the probability that it is less than $75. 2. The time per workout an athlete uses a stair climber are normally distributed with a mean of 20 minutes and a standard deviation of 5 minutes. Find the probability that an athlete selected uses the stair climber between 17 minutes and 28 minutes. 3. The normal distribution of women' s total cholesterol level is 197 mg/deciliter and the standard deviation is 37.7 mg/deciliter. What is the probability that a chosen woman would have a cholesterol level less than 217mg/deciliter of blood