A waiter believes the distribution of his tips has a model that is slightly skewed to the right, with a mean of $8.90 and a standard deviation of $4.30. He
usually waits on about 30 parties over a weekend of work.
a) Estimate the probability that he will earn at least $300.
b) How much does he earn on the best 10% of such weekends?
a) P(tips from 30 parties > $300) =
(Round to four decimal places as needed.)
b) The total amount that he earns on the best 10% of such weekends is at least $
(Round to two decimal places as needed.)
