The school cafeteria has 1/4 tray of lasagna left over after lunch. If 5 workers share the lasagna equally , what fraction of a tray will each worker get?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?