26.A local farmer is interested in comparing the yields of two varieties of tomatoes. In an experimental field, he selects 20 locations and assigns 10 plants from each variety at random to the locations. He determines the yield per plant (in pounds). The mean yield for plants of variety 1 was = 16.3 pounds with a standard deviation = 3 pounds. The mean yield for plants of variety 2 was =18.4 pounds with a standard deviation = 4 pounds. The standard error of the difference in sample means is a. 2.10 pounds. b. 2.50 pounds. c. 1.58 pounds.

26.A local farmer is interested in comparing the yields of two varieties of tomatoes. In an experimental field, he selects 20 locations and assigns 10 plants from each variety at random to the locations. He determines the yield per plant (in pounds). The mean yield for plants of variety 1 was = 16.3 pounds with a standard deviation = 3 pounds. The mean yield for plants of variety 2 was =18.4 pounds with a standard deviation = 4 pounds. The standard error of the difference in sample means is
a. 2.10 pounds.
b. 2.50 pounds.
c. 1.58 pounds.

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