Beer shelf life is a problem for brewers and distributors because when beer is stored at room temperature, its favor deteriorates. When the average furfuryl ether content reaches 6 g per liter, a typical consumer begins to taste an unpleasant chemical favor. (a) At α = .05, would the following sample of 12 randomly chosen bottles stored for a month convince you that the mean furfuryl ether content exceeds the taste threshhold? (b) What is the p-value?
Answer to relevant Questions(a) A statistical study reported that a drug was effective with a p-value of .042. Explain in words what this tells you. (b) How would that compare to a drug that had a p-value of .087? In trials of an experimental Internet-based method of learning statistics, pre-tests and post- tests were given to two groups: traditional instruction (22 students) and Internet-based (17 students). Pre-test scores were not ...Below is a random sample of shoe sizes for 12 mothers and their daughters. (a) At α = .01, does this sample show that women's shoe sizes have increased? State your hypotheses and show all steps clearly. (b) Is the decision ...In 2006, a sample of 200 in-store shoppers showed that 42 paid by debit card. In 2009, a sample of the same size showed that 62 paid by debit card. (a) Formulate appropriate hypotheses to test whether the percentage of debit ...The American Bankers Association reported that, in a sample of 120 consumer purchases in France, 60 were made with cash, compared with 26 in a sample of 50 consumer purchases in the United States. Construct a 90 percent ...
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