Question: How would I answer this question using a normal distribution calculator? A believes the distribution of her tips has a model that is slightly skewed

How would I answer this question using a normal distribution calculator?

A believes the distribution of her tips has a model that is slightly skewed to the left, with a mean of $10.5 and a standard deviation of $5.60. She usually waits on about 50 parties over a weekend of work.

a) Estimate the probability that she will earn at least $650

b) How much does she earn on the best 10% of suchweekends?

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