A waitress believes the distribution of her tips has a model that is slightly skewed to the right, with a mean of $10.80 and a standard deviation of $5.40. She usually waits on about 50 parties over a weekend of work. a) Estimate the probability that she will earn at least $550. b) How much does she earn on the best 5% of such weekends? a) P(tips from 50 parties > $550) = (Round to four decimal places as needed.) ... b) The total amount that she earns on the best 5% of such weekends is at least $ (Round to two decimal places as needed.)

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