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    Calculating Probability with Replacement

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    An urn contains 7 blue and 3 yellow chips. If the drawing of chips is done with replacement, determine the probability of:

    (a) Drawing three yellow chips.
    (b) Drawing a blue chip on the first draw and a yellow chip on the second draw.
    (c) Drawing a blue chip on the second draw given that a yellow chip was drawn on the first draw.
    (d) Drawing a yellow chip on the second draw given that a blue chip was drawn on the first draw.
    (e) Drawing a yellow chip on the second draw given that a yellow chip was drawn on the first draw.

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    Solution Preview

    An urn contains 7 blue and 3 yellow chips. If the drawing of chips is done with replacement, determine the probability of:

    (a) Drawing three yellow chips.
    Answer:
    (3/7) x (3/7) x (3/7) = ...

    $2.19

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