Question

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

Answer 1

Since it is 1 out of 14, take 400 and divide it by 14 (400/14) which would give 28.57142857... . So round to the nearest whole number = 29. SO THE ANSWER IS “C, 29”