Listed below are the costs (in dollars) of flights from New York (JFK) to San Francisco for US Air, Virgin America, Delta, American, Continental, United, and Alaska. Use the sign test with a 0.05 significance level to test the claim that there is no difference in cost between flights scheduled 1 day in advance and those scheduled 30 days in advance. What appears to be a wise scheduling strategy?
Use a 0.05 significance level with the indicated test. If no particular test is specified, use the appropriate nonparametric test from this chapter.
Answer to relevant QuestionsRefer to the same data from Exercise 2. Use a 0.05 significance level with the Wilcoxon signed-ranks test to test the claim that differences between fares for flights scheduled 1 day in advance and those scheduled 30 days in ...Listed below are skull breadths obtained from skulls of Egyptian males from three different epochs. Use a 0.05 significance level to test the claim that the samples are from populations with the same median. Changes in head ...Listed below are prices (dollars), quality scores, and ranks (1 = best) for six different 3D televisions. Use a 0.05 significance level to test for a linear correlation between price and quality score. Do you get more ...The SmartBatt company manufactures batteries for smart phones. Listed below are numbers of defects in batches of 200 randomly selected in each of 15 consecutive days of production. What action should be taken? 12 11 14 15 9 ...Using the data given in Exercise 3, find the mean and standard deviation of each of the two samples, then informally compare the results.
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