No matter what two loaded dice we have, it cannot happen that each of the sums 2
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Question:
No matter what two loaded dice we have, it cannot happen that each of the sums
comes up with the same probability.
Proof. Suppose that we have a pair of dice such that each of the possible sums
occurs with the same probability, Let pi be the probability that
the first die shows i and qi that the second does. Then the probability that the sum
is is pq and the probability that it is is pq Consequently, pq
and pq Also, the probability that the sum is is at least pq pq
so pq pq Hence, qp qp and
Related Book For
Probability And Statistics
ISBN: 9780321500465
4th Edition
Authors: Morris H. DeGroot, Mark J. Schervish
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