There Is an Average of 22

Multiple Choice

There is an average of 22.455 employees at 22 office furniture dealers in a major metropolitan area with a standard deviation of 18.52.Construct a 99% confidence interval for the true mean number of full-time employees at office furniture dealers.

A) [11.014 33.896]
B) [11.277 33.633]
C) [12.284 32.626]
D) [12.513 32.397]
E) [20.072 24.838]