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Data: 105, 91, 52, 86, 100, 96, 98, 109, 96, 106, 67 Suppose we have assigned...

Data: 105, 91, 52, 86, 100, 96, 98, 109, 96, 106, 67 Suppose we have assigned grades for the 11 students in our data: Grade A for students who scored≥ 90; B for students who scored≥ 80 and < 90; C for students who scored ≥ 70and < 80; D for students who scored≥ 60and < 70; F for students who scored< 60.Following the above grade scheme, we observe that we have 8 students who received grade A, 1 student received grade B, 0 students received grade C, 1 student received grade D and 1 student received grade F. Using this, please answer the following questions: Q28. Considering grade C or above as a pass grade, what is the probability for a student to receive a pass grade? Q29.What is the probability for a student not receiving a pass grade? Q30.What is the probability that the student received grade A or grade B? Q31. What is the probability that the student received grade A, grade B, or grade C?

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