Use the Confidence Level and Sample Data to Find a Confidence

Multiple Choice

Use the confidence level and sample data to find a confidence interval for estimating the population µ. Round your answer to the same number of decimal places as the sample mean.
-A group of 59 randomly selected students have a mean score of $29.5$ with a standard deviation of $5.2$ on a placement test. What is the $90 \%$ confidence interval for the mean score, $\mu$ , of all students taking the test?

A) $27.8 < \mu < 31.2$
B) $27.9 < \mu < 31.1$
C) $28.2 < \mu < 30.8$
D) $28.4 < \mu < 30.6$