The police department is keeping track of distracted drivers and accidents. They have found that if a driver is distracted, the driver has a 30% chance of being an accident. If the driver is not distracted, the driver has a 2% chance of being in an accident. The probability of a driver being distracted is 10%

Complete question is;

The police department is keeping track of distracted drivers and accidents. They have found that if a driver is distracted, the driver has a 30% chance of being in an accident. If the driver is not distracted, the driver has a 2% chance of being in an accident. The probability of a driver being distracted is 10%. If needed, create a tree diagram on a separate piece of paper. Then use the diagram to answer the questions.

a. What is the probability a driver will be in an accident? Explain.

b. What is the probability that a driver who was in an accident was distracted? Explain

A) 4.8%

B)62.5%

Step-by-step explanation:

I've attached the tree diagram

A) we are told that the probability of the driver being distracted is 0.1 and the probability of the driver having an accident is 0.3

Thus, probability that the driver is both distracted and may have an accident will be;

P(D&A) = 0.10 x 0.30 = 0.03

Now, since probability that the driver is distracted is 0.1,thus we can say that the probability that he wasn't distracted is; 1 - 0.1 = 0.90

From the question, we are told that if he is not distracted, the probability of having an accident is 0.02.

Thus,the probability of both him not being distracted and having an accident is;

= 0.9 x 0.02 = 0.018

Therefore, the probability of the driver being in accident is;

0.03 + 0.018 = 0.048 or 4.8%

B) We want to find out the probability that a driver who was in an accident was distracted.

In this case, we will ignore the possibilities where the driver did not have an accident.

So, we know that the probability that accident happened while distracted is 0.03.

While probability accident happened while not being distracted is 0.018

Now we are to find probability of accident while distracted compared to the total probability of any accident at all.

Thus, it's ;

0.03/(0.03 + 0.018)

= 0.03/0.048 = 0.625 or 62.5%

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3