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View History Bookmarks People Window Help Take a Test -Tosura Mayfield 3&centerwinayes; @Secure https://www.mathx.com/StudentplayerTest.aspx?testid» 17352694 Tosun Mayfield 1 203/. BMAL311 C90 Business Statistics Time Remaining: 02:14:44 Test: Midterm 2 This Test: 300 This Question: 6 pts 19 of 35 (5 complete) Construct a 95% confidence nerval to estimate the ulator, mean using the data below with 95% con dece, when n-47 the population mean is between a lower linit ofand an upper lin it of Round to two decimal places as needed.) Enter your answer in each of the answer boxes. tests and tests a not affect your grade. 3

Explanation / Answer

Solution:- Given that X = 37, = 10 , n = 47

95% confidence interval for Z is 1.96

=> X +/- Z * (/sqrt(n))

= 37 +/- 1.96*(10/sqrt(47))

= (34.14 , 39.86)

=> with 95% confidence,when n = 47 the population mean is between lower limit of 34.14 and an upper limit of 39.86.

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t-distribution

=>   95% confidence interval: 34.06 x 39.94

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