Probability of Pedestrian and Driver Intoxication

The video tutorial explains how to calculate the probability of a pedestrian not being intoxicated or a driver being intoxicated in pedestrian deaths caused by automobile accidents. It introduces the concept of the union of two events and the probability formula for non-mutually exclusive events. The tutorial provides a detailed calculation of the probabilities involved and demonstrates how to express the result as a fraction, decimal, and percentage.

What is the total number of pedestrian deaths considered in the problem?

• 688

• 82

• 976

• 144

Which formula is used to calculate the probability of non-mutually exclusive events?

• Probability of A or B = Probability of A - Probability of B

• Probability of A and B = Probability of A + Probability of B

• Probability of A or B = Probability of A + Probability of B

• Probability of A or B = Probability of A + Probability of B - Probability of A and B

How many pedestrian deaths involved pedestrians who were not intoxicated?

• 82

• 144

• 606

• 688

What is the probability that a pedestrian was not intoxicated?

• 688/976

• 144/976

• 606/976

• 82/976

How many driver intoxication cases were there?

• 144

• 82

• 62

• 688

Why do we subtract the probability of both pedestrian and driver being intoxicated?

• To simplify the calculation

• To increase the probability

• To avoid double-counting

• To ensure accuracy

What is the probability that both the pedestrian was not intoxicated and the driver was intoxicated?

• 688/976

• 62/976

• 144/976

• 82/976

What is the simplified fraction of the final probability?

• 688/976

• 82/976

• 144/976

• 375/488

What is the decimal approximation of the final probability?

• 0.768

• 0.688

• 0.144

• 0.082

What is the final probability expressed as a percentage?

• 8.2%

• 14.4%

• 68.8%

• 76.8%