B. [419 Points] DETAILS lLLDWSKYINTROSTAT'I B. 2.106.111\". _Y NOTES _5|( YOUR TEACHER .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 }ury duty. The committee randomly surveyed 81 people who recently served as jurors. The sample mean wait time was nine hours with a sample standard deviation of three; hours . El PETE] Which distribution should you use for this problem? {Enter your answer in the form 1 or fmrwhere off is the degrees of freedom.) E Explain your choice. 0 'he Student's fdistnbution for 81 degrees of freedom should be used because the sample standard deviation is known. 'he standard normal distribution should be used because the sample standard deviation Ls known. O 0 "he standard normal distribution should be used because the population standard deviation is known. 0 "he Student's fdistribution for 80 degrees of freedom should be used because we do not know the population standard deviation. I EL Parrot) Construct a 35% condence interval for the population mean time wasted. [i1 State the condence interval. {Round your answers to two decimal places. 1 (: :hrs [ii] Sketch the graph. [Round your answers to two decimal places. Enter your m'Z to three decimal places.) L. i_li_l {iii} Calculate the error bound. {Round your answer to two decimal places}