Construct a 95% Confidence Interval for the Population Mean, μ

question 85

Multiple Choice

Construct a 95% confidence interval for the population mean, μ. Assume the population has a normaldistribution. A random sample of 16 lithium batteries has a mean life of 645 hours with a standard deviation of31 hours. Round to the nearest tenth.

• A) (628.5, 661.5)
• B) (876.2, 981.5)
• C) (531.2, 612.9)
• D) (321.7, 365.8)