Which of the following is the correct interpretation of cap p times open paren cap x is less than or equal to 3 close paren ?

The notation P(X ≤ 3) means the probability that the random variable X is less than or equal to 3. In this context, X is the number of free throws made out of 8, so the event includes making exactly 3 or any fewer. That matches “at most 3.”

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