A $99 \%$ Confidence Interval (In Inches) for the Mean Height of a Height

A $99 \%$ confidence interval (in inches) for the mean height of a population is $66.2 < \mu < 67.6$ . This result is based on a sample of size 144 . Construct the $95 \%$ confidence interval. (Hint: you will first need to find the sample mean and sample standard deviation) .

A) $66.2$ in $< \mu < 67.6$ in.
B) $66.0$ in $< \mu < 67.8$ in.
C) $66.3$ in $< \mu < 67.5$ in.
D) $66.4$ in $< \mu < 67.4 \mathrm { in }$ .