Find the expected value.
-Four cards are numbered 1 through 4. Two of these cards are chosen at random without replacement and the numbers on them are multiplied. Find the expected value of this product.

Question

Quizplus · Accepted Answer

The expected value can be calculated by finding the mean of all possible products. The possible pairs and their products are: (1,2) = 2, (1,3) = 3, (1,4) = 4, (2,3) = 6, (2,4) = 8, (3,4) = 12. The mean of these products is (2+3+4+6+8+12)/6 = 35/6.

Find the Expected Value 356\frac { 35 } { 6 }635​

Find the Expected Value $\frac { 35 } { 6 }$