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2 cards from this section. Quick, good the night before a test.
What is the binomial distribution formula for calculating the probability of k successes?
Think about the structure of the binomial formula.
State the general form for a binomial distribution.
What does this notation represent in terms of trials and probabilities?
What is the formula for finding the probability of exactly k successes in a binomial distribution?
Look for the term that includes both successes and failures.
Is it necessary to present your final answer to three decimal places on an IB exam?
Consider the instructions that are usually provided with exam questions.
A basketball player makes 70% of his free throws. If he attempts 15 free throws, what is the probability that he makes exactly 12? Use the binomial distribution to calculate.
Apply the binomial formula step-by-step.
In a class of 30 students, it is known that 40% of them are good at math. If a random sample of 10 students is selected, what is the probability that exactly 4 are good at math?
Use the binomial distribution formula thoughtfully for selection.
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