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A waiter believes the distribution of his tips has a model that is slightly skewed to the left, with a mean of $\$8.20$ and a standard deviation of $\$5.60$. He usually waits on about 60 parties over a weekend of work. a) Estimate the probability that he will earn at least $\$600$. b) How much does he earn on the best 1% of such weekends?
I worked out A and got 0.0064. I am having an issue on B. I don't understand how you obtain z.
I worked out A and got 0.0064. I am having an issue on B. I don't understand how you obtain z.
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