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Unformatted text preview: ce of a package of Oreo cookies is above $3.33, if the
price of a gallon of milk is $3.54. That is, ﬁnd P (Y > 3.33X = 3.54).
(c) Find the probability that on a given day, the price of a package of Oreo cookies is
higher than the the price of a gallon of milk. That is, ﬁnd P (Y > X ).
(d) Alex is planning a MilkandOreos party for his imaginary friends. He buys 5 gallons
of milk and 7 packages of Oreo cookies. Find the probability that he paid less than
$40. That is, ﬁnd P (5X + 7Y < 40). Exercise 4
The data below are a random sample of 17 “3/4pound” burgers at Burger Queen.
(Assume the weights are normally distributed.)
12.15, 11.93, 12.04, 11.80, 12.02, 11.92, 12.18,...
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 Spring '08
 Stepanov
 Statistics, Standard Deviation

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