# Question: A television reporter is covering the election for mayor of

A television reporter is covering the election for mayor of a large city and will conduct an exit poll (interviews with voters immediately after they vote) to make an early prediction of the outcome. Assume that the eventual winner of the election will get 60% of the votes.

a. What is the probability that a prediction based on an exit poll of a random sample of 25 voters will be correct? In other words, what is the probability that 13 or more of the 25 voters in the sample will have voted for the eventual winner?

b. How large a sample would the reporter have to take so that the probability of correctly predicting the outcome would be .95 or higher?

a. What is the probability that a prediction based on an exit poll of a random sample of 25 voters will be correct? In other words, what is the probability that 13 or more of the 25 voters in the sample will have voted for the eventual winner?

b. How large a sample would the reporter have to take so that the probability of correctly predicting the outcome would be .95 or higher?

## Answer to relevant Questions

A city is planning to build a hydroelectric power plant. A local newspaper found that 53% of the voters in this city favor the construction of this plant. Assume that this result holds true for the population of all voters ...Refer to the sampling distribution discussed in Section 7.1. Calculate and replace the sample means in Table 7.3 with the sample medians, and then calculate the average of these sample medians. Does this average of the ...For a population, µ = 46 and σ = 10. a. For a sample selected from this population, and Find the sample size. µ = 46 and σ = 2.0. Assume n/N < .05. b. For a sample selected from this population, and Find the sample ...Explain the central limit theorem. Consider the following population of six numbers. a. Find the population mean. b. Liza selected one sample of four numbers from this population. The sample included the numbers 13, 8, 9, and 12. Calculate the sample mean and ...Post your question