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|_ Cond Nast Traveler conducts an annual survey in which readers rate iheir favorite cruise ship. All ships are rated on a IUDpoint scale, with
|_ Cond Nast Traveler conducts an annual survey in which readers rate iheir favorite cruise ship. All ships are rated on a IUDpoint scale, with higher values indicating better service. A sample of 37 ships that carryr fewer than 50!] passengers resulted in an average rating of 85.32, and a sample of 44 ships that carry SDI} or more passengers provided an average rating of 81.1. Assume that the population standard deviation is 4.52 for ships that earn:r fewer than 500 passengers and 3.95 for ships that carry EDD or more passengers. Round your all answers to two decimal places. a. What is the point estimate of the difference between the population mean rating for ships that carryr fewer than 500 passengers and the population mean rating for ships that oarr',r 500 o more passengers? I). At 95% condence, what is the margin of error'?I = That's Incorrect lference between the population mean ratings for the two size; of ships? Use ztahle. Check My Work
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