Question: A statistic course for several years has found that the following grade distribution has been very consistent. A, 10%, B, 25%, C, 35%, D, 20%, F 10%. This semester the grades of A, B, C, D, and F occurred with the frequencies of 15, 22, 25, 8 and 5 respectively. At the .05 significance level, test the claim that this semester’s grades have the same distribution as past grades.