# Question

An instructor always assigns final grades such that 20% are A, 40% are B, 30% are C, and 10% are D. The grade point scores are 4 for A, 3 for B, 2 for C, and 1 for D.

a. Specify the probability distribution for the grade point score of a randomly selected student of this instructor.

b. Find the mean of this probability distribution. Interpret it.

a. Specify the probability distribution for the grade point score of a randomly selected student of this instructor.

b. Find the mean of this probability distribution. Interpret it.

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