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Use the Confidence Level and Sample Data to Find a Confidence

Question 41

Multiple Choice

Use the confidence level and sample data to find a confidence interval for estimating the population µ.
-Test scores: n=109,x‾=79.1,σ=6.9;99\mathrm { n } = 109 , \overline { \mathrm { x } } = 79.1 , \sigma = 6.9 ; 99 percent


A) 77.4<μ<80.877.4 < \mu < 80.8
B) 78.0<μ<80.278.0 < \mu < 80.2
C) 77.8<μ<80.477.8 < \mu < 80.4
D) 77.6<μ<80.677.6 < \mu < 80.6

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