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File Edit View History Bookmarks Window Help mathxi.com Econ 2843: Elements of Statistics (Fall 2017, Section 4) Homework: H.W. 8.2. Score: 0 of 1 pt 8.2.11 Save Lab 3 of 4 (2 complete) HW Score: 8.33%, 0.3 Question Help * lf X-66, S-22, and n s49, and assuming that the population is normally distributed, construct a 95% confidence interval estimate of the population mean, . Click here to view page 1 of the table of critical values for the t distribution. ·without aff e Hom ework ebook ter Con media L hase O se Tool (Round to two decimal places as needed.) ct: o Enter your answer in the edit fields and then click Check Answer 2 All parts showing Clear All Check Answer OK

Explanation / Answer

Standard error of the mean = SEM = S/N = 3.143

t(, N-1) = 2.011

Confidence interval = m +/- (t(, N-1)*SEM)

Mean = 66

Lower bound: 59.68

Upper bound: 72.32

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