Question: The Coogan Construction Company has determined that the expected completion time for its most popular model home follows the normal probability distribution with a mean

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

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