Suppose that a committee is studying whether or not there is waste of 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 seven hours with a sample standard deviation of three hours. Construct a 95% confidence interval for the population mean time wasted. i. State the confidence interval (Round your answers to two decimal place) (_____,______) hrs ii. Sketch the graph. (Round your answers to two decimal places. Enter your ?/2 to three decimal places.) iii. Calculate the error bound. (Round your answer to two decimal places.) hrs
Suppose that a committee is studying whether or not there is waste of 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 seven hours with a sample standard deviation of three hours.
Construct a 95% confidence interval for the population mean time wasted.
i. State the confidence interval (Round your answers to two decimal place)
(_____,______) hrs
ii. Sketch the graph. (Round your answers to two decimal places. Enter your ?/2 to three decimal places.)
iii. Calculate the error bound. (Round your answer to two decimal places.)
hrs
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