Seven trials are conducted in a Bernoulli process in which the probability of success in a given

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Seven trials are conducted in a Bernoulli process in which the probability of success in a given trial is 0.7. If x = the number of successes, determine the following:

a. E(x)
b. σ
c. P(x = 3)
d. P(3 ≤ x ≤ 5)
e. P(x >4)

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