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# Hypothesis Testing of Internet Provides and Disc Players

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QUIZ TWO
DUE DAY SEVEN OF WEEK THREE

PROBLEM TWO (Ten Points):

PROBLEM THREE (Ten Points):

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#### Solution Preview

QUIZ TWO
DUE DAY SEVEN OF WEEK THREE

PROBLEM TWO (Ten Points):

Solution. Denote the percent of time that access to HTC by and denote the percent of time that access to Mountain by . Then the appropriate hypotheses are

The estimates of and are

are sample sizes. We can compute that

We use Z-test, so the test statistic is

If is true, then follows roughly the standard normal distribution. The test stat0stic has the value

Under 0.01 significance level, ...

#### Solution Summary

The solution addresses the following:

There are two major internet providers in the Colorado Springs area.....

The manufacturer of a compact disc player wanted to know whether a 10 percent reduction......

\$2.49