Question 26 • Algebra II
Let X be the number of surveyed students who have taken chemistry. This is a binomial setting with n = 12 and p = 0.40, so add the probabilities for k = 0, 1, 2, 3, and 4. Using P(X = k) = C(12, k)(0.40)^k(0.60)^(12 − k), the sum is about 0.438178, which rounds to 0.438. The correct choice is 0.438.
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