Slices of pizza for a certain brand of pizza have a mass that is approximately normally distributed with a mean of 67.1 grams and a standard deviation of 1.83 grams. 1. What is the probability of finding a random slice of pizza with a mass of less than 66.8 grams?
2. What is the probability of finding a 18 random slices of pizza with a mean mass of less than 66.8 grams?
3.What sample mean (for a sample of size 18) would represent the bottom 15% (the 15th percentile)?