In the autumn, contests for the largest pumpkin are held in several counties in Ohio. Winners can weigh more that 1500 pounds. Two new varieties of pumpkin are to be compared to see which produces the largest pumpkins. To do this, 10 plots of land located in different regions of the state will be used. Half of each plot will be planted with one pumpkin variety and half with the other variety. You compare the weights of both varieties and use

a) the two-sample t test.
b) the matched pairs t test.
c) the one-sample t test.