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AEM 2100
Name __________________
Spring 2010
Section_________________
Homework 6
1.)
How long does it take you to download a game for iPod?
According to Apple’s
technical support site,
www.apple.com/suppport/itunes
, downloading an iPod
game using a broadband connection should take 3 to 6 minutes.
Assume that the
download times are uniformly distributed between 3 and 6 minutes.
If you
download a game, what is the probability that the download time will be:
a.)
less than 3.3 minutes?
b.)
less than 4 minutes?
c.)
between 4 and 5 minutes?
d.)
What are the mean and standard deviation of the download times?
2.)
In a recent year, about twothirds of U.S. households purchased ground coffee.
Consider the annual ground coffee expenditures for households purchasing
ground coffee, assuming that these expenditures are approximately distributed as
a normal random variable with a mean of $45.16 and a standard deviation of
$10.00.
a.)
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 Spring '08
 VANES,C.

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