1. the number of days it takes a homebuilder to complete a house is normally distributed with a mean time of 176.7 days and a standard deviation of 24.8 days:

A) What is the probability that a randomly selected home will take between 185 and 225 days to complete?

B) What is the probability that a randomly selected house will take between 150 and 180 days to complete?

C) What is the probability that a randomly selected home will take less than 160 days to complete?

D) 90% of all homes will be completed in less than how many days?

2. Briefly explain The Empirical Rule.