2. Test of Independence: Agriculture Three types of fertilizer were used on 132 identical plots of maize.

Each plot was harvested and the yield (in kg) was recorded

(Reference: Caribbean Agricultural Research and Development Institute).

Type of Fertilizer Yield (kg) I II III Row Total 0–2.9 12 10 15 37 3.0–5.9 18 21 11 50 6.0–8.9 16 19 10 45 Column Total 46 50 36 132 Use a 5% level of significance to test the hypothesis that type of fertilizer and yield of maize are independent.

Interpret the results.