The American Automobile Association (AAA) reported that families planning to travel over the Labor Day weekend would spend an average of $749 (The Associated Press, August 12, 2012). Assume that the amount spent is normally distributed with a standard deviation of $225.

(a). What is the probability that a family's expenses are less than $500 for the weekend?

(b) What are the Labor Day weekend expenses for the 5% of the families with the most expensive travel plans?

Please utilize Excel