It has been observed that some persons who suffer colitis are diagnosed with it again within one year of the firstepisode. This is due, in part, to damage from the first episode. In order to examine the percentage of the persons whosuffer colitis a second time, a random sample of 900 people who suffered colitis was collected. It was observed that 17of them again suffered colitis within one year. Select a 90% confidence interval for the true proportion of those whosuffer a second episode. a) [0.0154, 0.0364]b) [0.0164, 0.0464]c) [0.0114, 0.0264]d) [0.0134, 0.0764]e) [0.0164, 0.0564]f) None of the above

11/2/2017CourseWare…5/6Question 11Your answer is CORRECT.When solving for the sample size required to estimate pto within a particular margin of error, under whatcircumstances do we use p̂ = .5?

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Question 12Your answer is CORRECT.Television viewers often express doubts about the validity of certain commercials. In an attempt to answer their critics,a large advertiser wants to estimate the true proportion of consumers who believe what is shown in commercials.Preliminary studies indicate that about 40% of those surveyed believe what is shown in commercials. What is theminimum number of consumers that should be sampled by the advertiser to be 85% confident that their estimate willfall within 2% of the true population proportion?

Question 13Your answer is CORRECT.