Question

It is estimated that 78% of drivers use their turn signal.

Part A: What is the probability that exactly 3 drivers use their turn signal if a police officer pulls over five drivers? (5 points)

Part B: What is the probability the next driver using their turn signal that the police officer pulls over if the fifth driver? (5 points)

Answer 1

Answer:

probability that 78% of drivers use their turn signal =78x/100=39x/50

part A:(p=3) over 5 drivers

39×3/50=117/50

part B: