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A waiter believes the distribution of his tips has a model that is slightly skewed to the right, with a mean of 10.40 and a

A waiter believes the distribution of his tips has a model that is slightly skewed to the right, with a mean of 10.40 and a standard deviation of 4.20. He usually waits on about 40 parties over a weekend of work.

A- Estimate the probability that he will earn at least 500.00?

B How much does he earn on the best 5% of such weekends?

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