Question: n = 538, p = 0.86; P(X 470) In Exercises 914, n is the sample size, p is the population proportion of successes, and

n = 538, p = 0.86; P(X ≤ 470)

In Exercises 9–14, n is the sample size, p is the population proportion of successes, and X is the number of successes in the sample. Use the normal approximation to find the indicated probability.

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