ASSIGNMENT
1. Many websites have ads whose appearance is based on probability. Advertisers pay the website based on the number of times the ad appears.
a. The probability that an ad appears when a particular website is loaded is 0.2. The website gets 2000 hits a day. About how many times does the ad appear?
b. The probability that an ad appears when a particular website is loaded is 0.05. About how many hits must the website have for the ad to appear 1000 times?
2. Critical Thinking An event has even odds when the odds in favor of (or against) the event are 1: 1. What is the probability of an event with even odds?
3. Critical Thinking The probability of rolling a 1 on a number cube is -16. What is the probability of not rolling a 1? In general, if the probability of an event is —n, what is the probability that the event does not occur? Explain your thinking.
4. Challenge A train runs every 15 minutes. You arrive at the train station without consulting the train’s time schedule. What is the probability that you will wait more than 10 minutes for the train?
