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il etisalat 4G 10:11 PM courses1.webwork.maa.org * 24%00 MATHEMATICAL ASSOCIATIO

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Question

il etisalat 4G 10:11 PM courses1.webwork.maa.org * 24%00 MATHEMATICAL ASSOCIATION OF AMERICA Logged in as 8356 . Log Out webwork/ petroleuminst-math045/ ch8/7 Ch8: Problem 7 Previous Problem Problem List Next Problem (1 point) The following random sample was selected from a normal distribution: 16 6 14 2 4 18 12 11 4 18 (a) Construct a 90% confidence interval for the population mean . 11.043 32.043 (b) Construct a 95% confidence interval for the population mean . 16.086 Note: You can earn partial credit on this problem. Preview My Answers Submit Answers

Explanation / Answer

a)

The 90% confidence interval is 6.96 to 14.04

b)

The 95% confidence interval is 6.14 to 14.86

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