Paying for music downloads. If you use the Internet, have you ever paid to access or download music? This was one of the questions of interest in a recent Pew Internet and American Life Project Survey (Oct. 2010). In a representa- tive sample of 755 adults who use the Internet, 506 stated that they have paid to download music. Let p represent the true proportion of all Internet-using adults who have paid to download music. do 001

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8.80 Paying for music downloads. If you use the Internet, have
you ever paid to access or download music? This was one
D
MUSIC of the questions of interest in a recent Pew Internet and
o 15American Life Project Survey (Oct. 2010). In a representa-
tive sample of 755 adults who use the Internet, 506 stated
i bas that they have paid to download music. Let p represent the
true proportion of all Internet-using adults who have paid
to download music.
mo
a. Compute a point estimate of p.
8.8
220
b. Set up the null and alternative hypotheses for testing
whether the true proportion of all Internet-using adults
10.
who have paid to download music exceeds .7.
C. Compute the test statistic for part b.
d. Find the rejection region for the test if a = .01.
e. Find the p-value for the test.
f. Make the appropriate conclusion using the rejection region.
g. Make the appropriate conclusion using the p-value.
%3D
Transcribed Image Text:8.80 Paying for music downloads. If you use the Internet, have you ever paid to access or download music? This was one D MUSIC of the questions of interest in a recent Pew Internet and o 15American Life Project Survey (Oct. 2010). In a representa- tive sample of 755 adults who use the Internet, 506 stated i bas that they have paid to download music. Let p represent the true proportion of all Internet-using adults who have paid to download music. mo a. Compute a point estimate of p. 8.8 220 b. Set up the null and alternative hypotheses for testing whether the true proportion of all Internet-using adults 10. who have paid to download music exceeds .7. C. Compute the test statistic for part b. d. Find the rejection region for the test if a = .01. e. Find the p-value for the test. f. Make the appropriate conclusion using the rejection region. g. Make the appropriate conclusion using the p-value. %3D
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