Ajax Pest Control Company has bred a new strain of pest-eating insects for the garden.In several test gardens the number of pests before and after introduction of their new insect has been recorded.The following data were obtained:

Garden: 1 2 3 4 5 6 7 8

Pre: 32 67 83 22 39 44 90 11

Post: 26 12 34 66 10 0 17 25

a. What is the power of this experiment usinga= 0.01_{2 tail}ifP_real= 0.70?

b. How could you increase the power?