The probability of success in a trial is 0.4 and there are 5 trials. The probability that

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The probability of success in a trial is 0.4 and there are 5 trials.

The probability that there are exactly 2 successes, P (2), is 0.346.

The probability that there are two or fewer successes, P (X ≤ 2)

is 0.683. The probability that there are more than two successes, P (X > 2), is 1 – 0.683, 0.317.

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