13. Carry out a chi-square test for goodness of fit for each of the following studies

(use the .01 level for each):

(a) Category Expected Observed 1 2% 5 2 14% 15 3 34% 90 4 34% 120 5 14% 50 6 2% 20

(b) Category Proportion Expected Observed A 1/3 10 B 1/6 10 C 1/2 10