Suppose that the die is rolled twice, rather than once. find the probability of rolling an even number on at least one die. find
p(aon first toss or a on second toss)
1 answer:
We know P = 1/2
X~B(2, 0.5)
n = 1
2C1 from pascal triangle = 2
P(X=0.5)= 2C1 x 0.5 x 0.5
= 0.5
= 50%
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