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Chrome File Edit View History Bookmarks People Window Help (S O * 98% CS) Thu Dec 14 11:01 PM Holly Enderle Q A assignment six × , e Assignment Six Chegg Study I × E Statistics And Probab Holly C Secure https://www.webassign.net/web/Student/Assignment-Responses/submit?dep-17334163 Need Help LTalk to a Tutor ar.gz 2. 0.2/1 points | Previous Answers MendStat14 8.E.025 My Notes Ask Your Teacher 1 PM Find a 90% confidence interval for a population mean for these values. (Round your answers to three decimal places.) (a) n-145, x-0.83, s2-0.085 to (b) n-80, x to 22.2, s2-3.18 (c) Interpret the intervals found in parts (a) and (b) 90% of all values will fall within the interval. There is a 10% chance that an individual sample proportion will fall within the interval In repeated sampling, 90% of all intervals constructed in this manner will enclose the population mean. There is a 90% chance that an individual sample proportion will fall within the interval In repeated sampling, 10% of all intervals constructed in this manner will enclose the population proportion. ms Need Help?Read It Talk to a Tutor ASS 3. ÷ 0.34/1 points I Previous Answers MendStat148.E-027 My Notes Ask Your Teacher

Explanation / Answer

Formula 90% CI = x +/- 1.645*s/sqrt(n)

a) 90% CI = 0.83 +/- 1.645*sqrt(0.085/145) = (0.790, 0.870)

b) 90% CI = 22.2 +/- 1.645*sqrt(3.18/80) = (21.872, 22.528)

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