Cirillo Brothers Construction Company has determined that the expected completion time for its most popular model home follows the normal probability distribution with a mean of 25 weeks and a standard deviation of 4 weeks.
What is the probability that the next home will be completed within 30 weeks? Within 22 weeks?
Find the number of weeks within which Cirillo Brothers is 99% sure the next home will be completed.
Find the number of weeks within which Cirillo Brothers is 85% sure the next home will be completed.