A researcher was interested in determining if the final grade distribution in KIN 200 fit a bell curve. The researcher hypothesized that 10% of the students would get an 'A', 20% would get a 'B', 40% would get a 'C', 20% would get a 'D', and 10% would get an 'F.' Final grades were posted and the researcher noted the following observed data: A B C D F 78 30 75 9 8. The null hypothesis would be a) the distribution is not: 10% 'a', 20% 'b' , 40% 'c', 20% 'd' and 10% 'f'. B) no relationship exists between a, b, c, d, and f. C) p=0. D) the distribution is 10% 'a', 20% 'b', 40% 'c', 20% 'd' and 10% 'g