1. Calculate probabilities from multivariate tables.

3. What is the probability of a person not being a car phone user?
Speeding violation in the last year
No speeding violation in the last year
total
Car phone user 25
280
305
Not a car phone user 45
405
450 70
685
755
What is the probability of a person not being a car phone user?
What is the probability of a person having a speeding violation in the last year?
What is the probability a person who is a car phone user has had a speeding violation in the last year?
What is the probability that a person has had a speeding violation in the last year given that they are a car phone user?
Given that a person has not had a speeding violation in the last year, what is the probability they are a car phone user?

4. Speeding violation in the last year
No speeding violation in the last year
total
Car phone user 25
280
305
Not a car phone user 45
405
450 70
685
755
What is the probability of a person not being a car phone user?
What is the probability of a person having a speeding violation in the last year?
What is the probability a person who is a car phone user has had a speeding violation in the last year?
What is the probability that a person has had a speeding violation in the last year given that they are a car phone user?
What is the probability that given a person has not had a speeding violation in the last year, they are a car phone user?
450/755
70/755
25/305
25/305
280/685

5. Calculating Probabilities from Practical Information
65 people were surveyed. 23 were vegetarian and 42 were not. 26 were female and 39 were male.
Vegetarian
Not Vegetarian
Total
Females 11
Males 27 39
Total: 23 65
Copy the table, fill in the gaps then Calculate the probability that a randomly chosen…
Person was vegetarian
Person was not vegetarian
Person was female
Person was male
Person was a male vegetarian
Female was not vegetarian
(g) Female was vegetarian
(h) Vegetarian was female