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Caitlyn calculated the probability of the complement of rolling a number greater than 2 on a 6-side number cube. She made her calculation as follows.

Did she make an error? Explain.

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  1. prob(greater than two) = 4/6 = 2/3
    prob(not greater than two) = 1 - 2/3 = 1/3

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  2. Yes, she made an error. Caitlyn should have taken the desired outcomes, rolling a 3, 4, 5, or 6, and divided that by the total possible outcomes. The correct probability would be 4/6, or 2/3.

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  3. yes she made an error. The correct prob would be 4/6 or 2/3

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  4. * not 2/3 its 1/3 sorry

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  5. Yes, she made an error. Caitlyn should have taken the desired outcomes, rolling a 3, 4, 5, or 6, and divided that by the total possible outcomes to get a probability of 4/6, or 2/3. She should have subtracted this probability from 1 to get the complement, which is 2/6, or 1/3.

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  6. You are pay attention to class

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