An instructor has given a short quiz consisting of two parts. For a randomly selected student, let

Question:

An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part and Y = the number of points earned on the second part. Suppose that the joint pmf of X and Y is given in the accompanying table. p(x, y) y 0 5 10 15 .02 .06 .02 .10 x 5 .04 .15 .20 .10 10 .01 .15 .14 .01

a. If the score recorded in the grade book is the total num- ber of points earned on the two parts, what is the expected recorded score E(X + Y)?

b. If the maximum of the two scores is recorded, what is the expected recorded score?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question
Question Posted: