A Laboratory Tested 78 Chicken Eggs and Found That the Mean

Multiple Choice

A laboratory tested 78 chicken eggs and found that the mean amount of cholesterol was 224 milligrams with $s = 14.7$ milligrams. Find the $95 \%$ confidence interval.

A) $220 < \mu < 226$
B) $221 < \mu < 227$
C) $222 < \mu < 228$
D) $220 < \mu < 227$