Consider a deck consisting of seven cards marked 127 Three o

Consider a deck consisting of seven cards, marked 1,2,...,7. Three of these cards are selected at random. Define a random variable W by W=the sum of the resulting numbers, and then compute the probability mass function of W. Then compute and 2. Hint: Consider the outcomes as unordered, then there are 35 outcomes, which can be listed.

Solution

________________________________________________________________________________

_____________________________________________________________________________