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10 March, 21:41

A factory makes car batteries. The probability that a battery is defective is a

If 400 batteries are tested, about how many are expected to be defective?

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  1. 11 March, 01:25
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    Answer: 29

    Step-by-step explanation:

    Heer is the complete question:

    A factory makes car batteries. The probability that a battery is defective is 1/14. If 400 batteries are tested, about how many are expected to be defective?

    A) 14

    B) 371

    C) 29

    D) 35

    Probability that a battery is defective = 1/14

    Number of batteries tested = 400

    Expected number of defective batteries = Probability that a battery is defective * Number of batteries tested

    = 1/14 * 400

    = 400/14

    = 28.57

    = 29 Approximately
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