Question 9 your answer is incorrect suppose that

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Question 9 Your answer is INCORRECT. Suppose that prior to conducting a coin-flipping experiment, we suspect that the coin is fair. How many times would we have to flip the coin in order to obtain a 90% confidence interval of width of at most .16 for the probability of flipping a head? a) 64 b) 106 c) 111 d) 65 e) 105 f) None of the above
Question 10 Your answer is CORRECT. It has been observed that some persons who suffer from common colds are diagnosed with it again within one year of the first episode. This is due, in part, to damage from the first episode. In order to examine the percentage of the persons who suffer from common colds a second time, a random sample of 1200 people who suffered from common colds was collected. It was observed that 17 of them again suffered from common colds within one year. Select a 90% confidence interval for the true proportion of those who suffer a second episode.
10/31/2018 Print Test f) None of the above Question 11 Your answer is CORRECT. When solving for the sample size required to estimate p to within a particular margin of error, under what circumstances do we use p̂ = .5? .
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