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A factory makes car batteries. The probability that a battery is defective is1/6 If 400 batteries are tested, about how many are expected to be defective?A. 40 B. 25C. 16D. 375
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A factory makes car batteries. The probability that a battery is defective is1/6 If 400 batteries are tested, about how many are expected to be defective?A. 40 B. 25C. 16D. 375

User Jokubas Trinkunas
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5 votes

Since there are 400 batteries are tested

Since the probability of the defective batteries is 1/6

The number of defective batteries =


(1)/(16)*400=25

The answer is B

User AJN
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