Question: 2. Interval estimation of a population mean, population standard deviation known Aa Aa The 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by WorldOne

2. Interval estimation of a population mean, population standard deviation known Aa Aa The 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by WorldOne Research, included the question, "How many hours do you work at your job on a typical workday?" Let x = the number of hours a legal professional works on a typical workday. Suppose that x is normally distributed with a known standard deviation of 11.9. A sample of 250 legal professionals was surveyed, and the sample's mean response was 9 hours. Use the sample information to estimate the mean number of hours a legal professional works on a typical workday. The sampling distribution of X is normal with a mean deviation of 0.0476 equal to the unknown population mean and a standard You can be 99% confident that the interval estimate to includes the population mean p. Flash Player WIN 32,0,0,403

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