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y Lab Sto A researcher wishes to estimate the average blood alcohol concentration (BAC) for drivers involved in fatal accidents who are found to have positive BAC values. He My Courses randomly selects records from 60 such drivers in 2009 and determines the sample mean BAC to be 0.16 g/dL with a standard deviation of 0.060 g/dL. Complete parts (a) through (d) below. Course Home Homework approximately normal. (b) Recently there were approximately 25,000 fatal crashes in which the driver had a positive BAC. Explain why this, along with the fact that the data were obtained Quizzes & Tests using a simple random sample, satisfies the requirements for constructing a confidence interval. Student Activity OA. The sample size is likely greater than 10% of the population. Workbook B. The sample size is likely less than 5% of the population. Study Plan X C. The sample size is likely greater than 5% of the population. D. The sample size is likely less than 10% of the population. Gradebook (c) Determine and interpret a 90% confidence interval for the mean BAC in fatal crash s in which the driver had a positive BAC. StatCrunch (Use ascending order. Round to three decimal places as needed.) O A. The lower bound is and the upper bound is . The researcher is 90% confident that the population mean BAC is not in the confidence interval for drivers Chapter Conten involved in fatal accidents who have a positive BAC value. Incorrect O B. The lower bound is and the upper bound is . The researcher is 10% confident that the population mean BAC is in the confidence interval for drivers eText involved in fatal accidents who have a positive BAC value. Tools for Succes O C. The lower bound is and the upper bound is . The researcher is 90% confident that the population mean BAC is in the confidence interval for drivers involved in fatal accidents who have a positive BAC value. Multimedia Lib Purchase Option Help me solve this View an example Get more help - Clear all Check