A. What is the probability that the chosen driver is wearing seatbelt and driving not under influence?  a. 80/151 b. 8/151 c. 57/151 d. 88/151 B. What is the probability that the chosen driver is wearing seatbelt given that he/she is under influence?  a. 3/7 b. 80/137 c. 4/7 d. 57/137 C. What is the probability that the chosen driver is wearing seatbelt or under influence?

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STATISTICS AND PROBABILITY

MULTIPLE CHOICE

Suppose a study of driving under influence and driving without seatbelt produced the following data:

  Driving under influence in year 2021 Driving not under influence in year 2021
Wearing seatbelt while driving 40 400
Not wearing seatbelt while driving 30 285

 

A. What is the probability that the chosen driver is wearing seatbelt and driving not under influence? 

a. 80/151

b. 8/151

c. 57/151

d. 88/151

B. What is the probability that the chosen driver is wearing seatbelt given that he/she is under influence? 

a. 3/7

b. 80/137

c. 4/7

d. 57/137

C. What is the probability that the chosen driver is wearing seatbelt or under influence?

a. 94/151

b. 94/137

c. 80/137

d. 80/151

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