Use the Given Degree of Confidence and Sample Data to Construct

question 94

Multiple Choice

Use the given degree of confidence and sample data to construct a confidence interval for the population mean µ. Assume that the population has a normal distribution.
- $\mathrm { n } = 30 , \overline { \mathrm { x } } = 90.8 , \mathrm {~s} = 6.2,90 \%$ confidence

• A) \(88.88 < \mu < 92.72\)
• B) \(88.49 < \mu < 93.11\)
• C) \(88.89 < \mu < 92.71\)
• D) \(87.68 < \mu < 93.92\)