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Chrome File Edit View History Bookmarks People Window Help (g O * 4) 100% E Fri 7:35 PM a : USF * Quiz: Midterm Exam xMyUSF x G The Bonferroni intervals show Chegg Study | Guided Solutio x Carlos (-? Secure https://usflearn.instructure.com/courses/1281532/quizzes1778034/take USF Question 23 4 pts It was desired to estimate the proportion of all USF students that have a tattoo. A random sample yielded the printout shown below. Use it to answer the following Hypothesis Test One Proportion Sample Size 213 Proportion 025822 Courses 28 Null Hypothess: P 0.3 Alternative Hyp: P0.3 Calendar 004178 Standard Error 0.02999 1.33 Inbox Z (uncorrected) P 0.1833 Help Method 95% Confidence Interval Simple Asymptotic (0.19944.031699) You are asked if the proportion of all USF students with a tattoo is 20%. How would you respond? " aaim that you are 95% confident that the proportion coceeds 20%. aaim that you are 95% confident that the proportion is less than 20%. O Claim that the proportion might be 20% when using a 95% confidence level. @ Claim that the proportion equals 20% when Lang a 92% contdence level. of the five sales closing techniques. The data on trust levels for all 50 were 49,296

Explanation / Answer

The 95% confidence interval for the proportion of USF students with tattoo is given to be (0.19944, 0.31699) which contains the value 20%. Therefore we have sufficient evidence here that at 95% confidence level, the proportion might be 20% but we cannot be sure, because any value of the confidence interval is likely. So it could be 20% but not sure.

Therefore C is the correct answer here that is claim that it might be 20% based on 95% confidence level.

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