Nick alleges that the grade distribution for STAT2000 has historically had the following distribution. A: 34% B: 42% C: 20% D/F: 4% You are curious if this distribution still applies this semester, so you randomly select 144 classmates who took the course with you this semester and find their grades. Your results were: A: 42 B: 57 C: 32 D/F: 13 (a) What is the contribution to the test statistic for a grade of C? (3 decimal places) (b) If the test statistic is 10.645, what is your p-value? (3 decimal places) (c) At = .05, what would you conclude for the test?Based on the p-value, ---Select--- do not reject reject the null hypothesis. Conclude the distribution of grades ---Select--- is consistent is not consistent with the professor's claim.