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Online magazines make it easy for readers to link to an advertiser’s website directly from an advertisement placed in the digital magazine. A recent survey indicated that 56% of online magazine readers have clicked on an advertisement and linked directly to the advertiser’s website. The survey was based on a sample size of (Data extracted from “Metrics,” EContent, January/February, 2007, p. 20.) a. Use the five-step p-value approach to try to determine whether there is evidence that more than half of all the readers of online magazines have linked to an advertiser’s website. (Use the 0.05 level of significance.) b. Suppose that the sample size was only and, as before, 56% of the online magazine readers indicated that they had clicked on an advertisement to link directly to the advertiser’s website. Use the five-step p-value approach to try to determine whether there is evidence that more than half of all the readers of online magazines have linked to an advertiser’s website. (Use the 0.05 level of significance.) c. Discuss the effect that sample size has on hypothesis testing. d. What do you think are your chances of rejecting any null hypothesis concerning a population proportion if a sample size of is used? 9.57 One of the issues facing organizations is increasing diversity throughout the organization. One of the ways to evaluate an organization’s success at increasing diversity is to compare the percentage of employees in the organization in a particular position with a specific background to the n = 20 n = 100, n = 6,403. a = 0.05. H1 : p Z 0.20 H0 : p = 0.20 ZSTAT? percentage in a particular position with that specific background in the general workforce. Recently, a large academic medical center determined that 9 of 17 employees in a particular position were female, whereas 55% of the employees for this position in the general workforce were female. At the 0.05 level of significance, is there evidence that the proportion of females in this position at this medical center is different from what would be expected in the general workforce?
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