# a randomly selected resident

1. A small town has 5600 residents. The residents in the town were asked whether or not they favored building a new bridge across the river. You are given the following information on the residents’ responses, broken down by gender:

Men          Women          Total

In Favor                  1400            280               1680

Opposed                  840           3080               3920

Total                2240           3360               5600

A) What is the probability of a randomly selected resident being Opposed to the bridge?

B) What is the probability that a randomly selected resident is a man and is In Favor of the bridge?

C) What is the probability of a randomly selected resident being a man or In Favor of the bridge?

D) If a randomly selected resident is a woman, what is the probability that she is in favor of the bridge?

E) Are gender and opinion about the bridge mutually exclusive events? Why?

F) Are gender and opinion about the bridge independent events? Why? Show some “proof” with probabilities.

2. How many Combinations of 4 students can be selected from a group of 9 students?

3. Describe the Sample Space for the experiment of rolling a pair of dice.

1 page