Question: Use the data in Example 3 to construct a 99% confidence interval for the population proportion of adults who think that people over 65 are

Use the data in Example 3 to construct a 99% confidence interval for the population proportion of adults who think that people over 65 are the more dangerous drivers.

a. Find p̂ and q̂.

b. Verify that the sampling distribution of p̂ can be approximated by a normal distribution.

c. Find z_c and E.

d. Use p̂ and E to find the left and right endpoints of the confidence interval.

e. Interpret the results.

Data in Example 3

The figure at the right is from a survey of 498 U.S. adults. Construct a 99% confidence interval for the population proportion of U.S. adults who think that teenagers are the more dangerous drivers.

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