0 HW6 STAT 201: C \'s Sam x Y VA Hw6 STAT 201: CIs & Sex YC Checa Study 1 Guided
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0 HW6 STAT 201: C 's Sam x Y VA Hw6 STAT 201: CIs & Sex YC Checa Study 1 Guided Sox CO www.webassign.net/web/Student/Assignment-/last?dep=17382736?course=443014.635852⌖=web/Student/Assignment-Responses/last?dep=173827368. Q Responses 1. -11 points My Notes From the choices below, the statement that is **NO T* * true about confidence intervals is: A 900% confidence interval (CI) procedure has a higher probability of producing intervals that include the true population value than a 80% CI procedure. An approximate formula for a 90% confidence interval (CI) is: point estimate +/- bound o A confidence interval (CI) between 0.15 and 0.35 means that the true population proportion lies between 0.15 and 0.35 A confidence interval (CI) is an interval of values computed from sample data that is likely to include the true, but unknown, population value 2. -11 points My Notes Suppose that a health expert has claimed that 16 % of college students smoke cigarettes. To investigate this claim , researchers survey a random sample of college students. Using this sample, a 99 % confidence interval for the percentage of college students who smoke is found to be 20.29 % to 23.71 %. Based this interval, can we conclude that the claim that 16 % of all college students smoke is reasonable? Select Submit AnswerSave Progress Practice Another version 3. –12 points My Notes In a recent study a SRS of 450 employed Americans, 48 individuals indicated that they would fire their boss if they could. Calculate a 95% confidence interval for the population proportion who would fire their boss if they could. (Round the answers to three decimal places.) Note: 3 submission opportunities to 3 pt each) Type here to search 2:12 PM 10/24/2017Explanation / Answer
Answer - 1: Option C is not correct because the degree of confidence is not given and without that, we can't interpret the confidence interval. This statement indicates that there is 100% probability that the population proportion will be between 0.15 and 0.35 which is not possible.
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