Among a Simple Random Sample of 12 Students Selected from One

Multiple Choice

Among a simple random sample of 12 students selected from one college, the mean number of siblings is 1.3 with a standard deviation of 1.1. Construct the 95% confidence interval estimate of the population mean.

A) $1.1 < \mu < 1.5$
B) $0.66 < \mu < 1.9$
C) $10.1 < \mu < 13.9$
D) $1.0 < \mu < 1.6$