The Sugar Producers Association Wants to Estimate the Mean Yearly

Multiple Choice

The Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption to be 27 kg with a sample standard deviation of 9 kg. Assume a normal population. Develop a 90% confidence interval for the mean annual consumption of sugar.

A) 23.06 to 30.94
B) 22.20 to 31.80
C) 20.37 to 33.63
D) 23.30 to 30.70
E) 23.0 to 30.0