theres 5 parts to this question i need help with, please let me know in comments to help with test

A filalinges teacher claims that, on the average, 10%% of her students get a grade of A, 1576 gets A 10%. pit . C. 2016 get aD, and 25% get an F. The grades of a random sample of 1 10 students were recorded. The following table presents the results Test the hypothesis that the grades follow the distribution claimed by the teacher Use the 0.01 level of significance and the P-value imethod with the TI-84 Plus calculator. Grade Observed 9 34 12 28 Land ouin My Ferel Port Lor S (a) How many of the students in the sample got an A? How many put a of The number of students who got an A is The number of students who got a D is