Chapter 4.5, Problem 165E

a.

To determine

Explain whether the given study is an experiment or an observational study.

b.

To determine

Find the proportion of melanoma patients who had cancer on the left side.

c.

To determine

Interpret the 95% confidence interval for the proportion of melanomas occurring on the left.

d.

To determine

Provide the null and alternative hypotheses to test whether melanomas are more likely to occur on the left side than on the right side.

e.

To determine

Explain whether the test is one-tailed or two-tailed.

f.

To determine

Predict the hypothesis test results in Part (D) using the confidence interval in Part (c).

g.

To determine

Give conclusion of the test.

h.

To determine

Check whether the data support a conclusion that more melanomas occur on the left side because of increased exposure to sunlight on that side for drivers.