Hotel Costs II Refer to Exercise 9.25. Thetable below
Chapter 9, Problem 26(choose chapter or problem)
Hotel Costs II Refer to Exercise 9.25. Thetable below shows the sample data collected to comparethe average room rates at the Westin and Doubletreehotel chains.7Westin DoubletreeSample Average ($) 165 125Sample Standard Deviation 22.5 12.8a. Do the data provide sufficient evidence to indicatea difference in the average room rates for theWestin and the Doubletree hotel chains? Usea .05.b. Construct a 95% confidence interval for the differencein the average room rates for the two chains.Does this interval confirm your conclusions in part a?
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