Ms. Maria Wilson is considering running for mayor of the town of Bear Gulch, Mon

Question

Ms. Maria Wilson is considering running for mayor of the town of Bear Gulch, Montana. Before completing the petitions she decides to conduct a survey of voters in Bear Gulch. A sample of 400 voters reveals that 300 would support her in the November election.

a. Estimate the value of the population proportion.
b. Develop a 99% confidence interval for the population proportion.
c. Interpret your findings.

Explanation / Answer

A) p = 300/400 = 0.75 B) (0.75 - 2.58*0.0217, 0.75 + 2.58*0.0217) => (0.694, 0.806) C) We are 99% confident that the true value of the proportion of individuals who would support her in the November election lies in the above interval.

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