The coach told the high school swim team that times in the 200-yard individual medley in the Division I-AA Swim Championships typically are more than 1/2 second faster than their seed times going into the meet. At α = .05, do these times (in seconds) for 26 male competitors (actual data with altered names) contradict the coach's assertion? The null hypothesis is H0: µd ≤ 0.5 second.
Answer to relevant QuestionsBelow 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 ...Find the sample proportions and test statistic for equal proportions. Find the p-value. a. Dissatisfied workers in two companies: x1 = 40, n1 = 100, x2 = 30, n2 = 100, α = .05, two-tailed test. b. Rooms rented at least a ...When tested for compliance with Sarbanes-Oxley requirements for financial records and fraud protection, 14 of 180 publicly traded business services companies failed, com- pared with 7 of 67 computer hardware, software, and ...Which samples show unequal variances? Use α = .10 in all tests. Show the critical values and degrees of freedom clearly and illustrate the decision rule. a. s1 = 10.2, n1 = 22, s2 = 6.4, n2 = 16, two-tailed test b. s1 = ...A 2005 study found that 202 women held board seats out of a total of 1,195 seats in the Fortune 100 companies. A 2003 study found that 779 women held board seats out of a total of 5,727 seats in the Fortune 500 companies. ...
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