A box contains 9 new light bulbs and 6 used light bulbs. Each light bulb is the same size and shape. Meredith will randomly select 2 light b

Question

A box contains 9 new light bulbs and 6 used light bulbs. Each light bulb is the same size and shape. Meredith will randomly select 2 light bulbs from the box without replacement. What is the probability Meredith will select a new light bulb and then a used light bulb

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Mộc Miên 4 years 2021-09-02T08:02:37+00:00 1 Answers 121 views 0

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  1. minhkhang
    0
    2021-09-02T08:03:46+00:00
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    Answer:

    (9/35) = 0.257

    Explanation:

    Box contains 9 new light bulbs and 6 used light bulbs, total number of bulbs = 15.

    Probability of selecting two bulbs; a new light bulb and then, a used light bulb in that order = [(probability of selecting a new bulb) × (probability of selecting a used bulb from the rest)] = [(9/15) × (6/14)] = (9/35) = 0.257

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