12.8b
A poll by a reputable research center asked, "If you won 10 million dollars in the lottery, would you continue to work or stop working?" Of the 1075 adults from a certain country surveyed, 890 said that they would continue working. Use the one-proportion plus-four z-interval procedure to obtain a 99% confidence interval for the proportion of all adults in the country who would continue working if they won 10 million dollars in the lottery. Interpret your results. The plus-four 99% confidence interval is from 0.797 to 0.856. (Round to three decimal places as needed. Use ascending order.) Interpret the plus-four 99% confidence interval. Select the correct choice below and fill in the answer boxes within your choice. (Round to three decimal places as needed. Use ascending order.) OA. There is a 99% chance that the confidence interval of to O B. does not contain the true proportion of all adults in the country who would continue working. The research center can be 99% confident that the proportion of adults in the sample who would continue working is between and O C. There is a 99% chance that another interval for the proportion of all adults in the country who would continue working will be from O D. The research center can be 99% confident that the proportion of all adults in the country who would continue working is between to and
12.8b
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