Assume That A $95 \%$ Confidence Interval for the Mean Is $10.5 < \mu < 15.0$

Multiple Choice

Assume that a $95 \%$ confidence interval for the mean is $10.5 < \mu < 15.0$ . The null hypothesis $H _ { 0 } : \mu = 12.0$ at $\alpha = 0.05$ would

A) not be rejected because 12.0 is less than 15.0.
B) be rejected because 12.0 is more than 10.5.
C) not be rejected because 12.0 is between 10.5 and 15.0.
D) be rejected because 12.0 is not equal to 12.75.