Question

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

Answer 1

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