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  3. 106 suppose that a committee is studying whether t

106 Suppose that a committee is studying whether there is wasted time in our judicial...

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106 Suppose that a committee is studying whether there is wasted time in our judicial system It is interested in the mean amount of time individuals waste at the courthouse waiting to be called for jury duty The committee randomly surveyed 81 people who recently served as jurors The sample mean wait time was 8 hr with a sample standard deviation of 4 hr a 1 x ii Sx iii n iv n 1 b Define the random variables X and X in words c Which distribution should you use for this problem Explain your choice d Construct a 95 percent confidence interval for the population mean time wasted i State the confidence interval ii Sketch the graph iii Calculate the error bound Explain in a complete sentence what the confidence interval means

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