Suppose that in a certain metropolitan area, 95% of all households have cable TV. Let x...
Suppose that in a certain metropolitan area, 95% of all households have cable TV. Let x denote the number among four randomly selected households that have cable TV. Then x is a binomial random variable with
n = 4
and
p = 0.95.
(Use technology. Round your answers to four decimal places.)
(a)
Calculate
p(3) = P(x = 3).
(b)
Calculate
p(4),
the probability that all four selected households have cable TV.
(c)
Calculate
P(x ≤ 3).
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