Answer:
p =
probability of success
probability
of failure = 1 ? p
Let
x be the number of successes, then x has the binomial distribution with n = 6,
p =
P
(x = r) = nCr qn-r pr
(i)
P(5 successes = P(x = 5)
(ii)
P (atleast 5 successes) =
=
P (x = 5) + P (x = 6)
(iii)
P (at most 5 successes)
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