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(X > 3.3)

= P(X = 3.7) + P(X = 4)

= 0.22 + 0.18

= 0.40

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