Question: 8.38 SUVs A sample survey is designed to estimate the proportion of sports utility vehicles being driven in PEI. A random sample of 500 registrations

8.38 SUVs A sample survey is designed to estimate the proportion of sports utility vehicles being driven in PEI. A random sample of 500 registrations are selected from a PEI database, and 68 are classified as sports utility vehicles.

a. Use a 95% confidence interval to estimate the pro- portion of sports utility vehicles in PEI.

b. How can you estimate the proportion of sports util- ity vehicles in PEI with a higher degree of accu- racy? (HINT: There are two answers.)

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