A waitress believes the distribution of her tips has a model that is slightly sk
ID: 3058428 • Letter: A
Question
A waitress believes the distribution of her tips has a model that is slightly skewed to the left , with a mean of $8.80 and a standard deviation of $6.50. She usually waits on about 40 parties over a weekend of work. a) Estimate the probability that she will earn at least $450. b) How much does she earn on the best 5 % of such weekends?
a) P(tips from40 parties greater than> $450 )=
(Round to four decimal places as needed.)
b) The total amount that she earns on the best 55 %of such weekends is at least $
Explanation / Answer
A waitress believes the distribution of her tips has a model that is slightly skewed to the left , with a mean of $8.80 and a standard deviation of $6.50. She usually waits on about 40 parties over a weekend of work. a) Estimate the probability that she will earn at least $450. b) How much does she earn on the best 5 % of such weekends?
a) P(tips from40 parties greater than> $450 )=
(Round to four decimal places as needed.)
b) The total amount that she earns on the best 55 %of such weekends is at least $
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