Two types of fertilizers, UREA and CAN were applied to two maize plots 1 and 2 respectively. Farmers think that there is no difference in maize yield between two fertilizers. A researcher takes sample of 40 maize grains in plot 1 and 32 maize grains in plot 2. The average weight of maize grains is 10kg in plot 1 and 7kg in plot 2. Standard
deviation for weights for plot1 is 2kg and for plot 2 is 4kg. Test whether there is a difference in maize yield for UREA and CAN.

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