The outcomes of your undergraduate courses are counted where A = 4.0, A- = 3.7,

Question

The outcomes of your undergraduate courses are counted where A = 4.0, A- = 3.7, ...D =1. Using the Grades you received in undergrad and the probability of each grade, a probability table was created as below. Use the table. In a randomly selected class, what is the probability you received a grade higher than a B?

Outcome             P(outcome)

4                            .18
3.7                         .12
3.3                         .00
3                            .20
2.7                         .25
2.3                         .15
2.0                        .08
1.7                        .02

Explanation / Answer

P(grade higher than B) = P(higher than 3) = P(3.3) + P(3.7) + P(4) = 0 + 0.12 + 0.18 = 0.3 (ans)

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