In an Agricultural Experiment, the Effects of Two Fertilizers on the Production

Multiple Choice

In an agricultural experiment, the effects of two fertilizers on the production of oranges were measured. Fourteen randomly selected plots of land were treated with fertilizer A, and 10 randomly
Selected plots were treated with fertilizer B. The number of pounds of harvested fruit was measured
From each plot. Following are the results. Assume that the populations are approximately normal. Construct a 95% confidence interval for the
Difference between the mean yields for the two types of fertilizer.

A) (20.3, 64.6)
B) (16.4, 68.6)
C) (14.0, 70.9)
D) (19.0, 65.9)