Construct a 90% Confidence Interval for the Population Mean $\mu.$ Assume the Population Has a Normal Distribution

question 17

Multiple Choice

Construct a 90% confidence interval for the population mean, $\mu.$ Assume the population has a normal distribution. A sample of 15 randomly selected students has a grade point average of 2.86 with a standard
Deviation of 0.78.

• A)(2.51, 3.21)
• B)(2.41, 3.42)
• C)(2.37, 3.56)
• D)(2.28, 3.66)

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