The following probabilities for grades in management

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The following probabilities for grades in management science have been determined based on past records:

Grade

Probability

A

0.10

B

0.30

C

0.40

D

0.10

F

0.10


1.00

The grades are assigned on a 4.0 scale, where an A is a 4.0, a B a 3.0, and so on. Determine the expected grade and variance for the course.

Reference no: EM13630482

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