Suppose that you ask three friends to go to the mall. Each one has a 0.70 chance of saying yes. What is the probability that all three friends will say they can go to the mall with you?

Assuming each friend’s decision is independent, multiply the chance that each one says yes: 0.70 × 0.70 × 0.70 = 0.343. So the probability that all three say yes is 0.343, choice C.

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