Agriculture: Lima Beans Are yields for organic farming different from conventional farming yields?

Independent random samples from method A (organic farming) and method B (conventional farming) gave the following information about yield of lima beans

(in tons/acre) (Reference: Agricultural Statistics, U.S.

Department of Agriculture).

Method A 1.83 2.34 1.61 1.99 1.78 2.01 2.12 1.15 1.41 1.95 1.25 Method B 2.15 2.17 2.11 1.89 1.34 1.88 1.96 1.10 1.75 1.80 1.53 2.21 Use a 5% level of significance to test the hypothesis that there is no difference between the yield distributions.

AppendixLO1