Questions from Business Statistics


Q: The Mars company says that before the introduction of purple, yellow

The Mars company says that before the introduction of purple, yellow candies made up 20% of their plain M&M, red another 20%, and orange, blue, and green each made up 10%. The rest were brown. 1. If y...

See Answer

Q: The American Red Cross says that about 45% of the U

The American Red Cross says that about 45% of the U.S. population has Type O blood, 40% Type A, 11% Type B, and the rest Type AB. 1. Someone volunteers to give blood. What is the probability that this...

See Answer

Q: In Exercise 39, you calculated probabilities of getting various M&

In Exercise 39, you calculated probabilities of getting various M&M. Some of your answers depended on the assumption that the outcomes described were disjoint; that is, they could not both happen at t...

See Answer

Q: In Exercise 40, you calculated probabilities involving various blood types.

In Exercise 40, you calculated probabilities involving various blood types. Some of your answers depended on the assumption that the outcomes described were disjoint; that is, they could not both happ...

See Answer

Q: You roll a fair die three times. What is the probability

You roll a fair die three times. What is the probability that 1. you roll all 6? 2. you roll all odd numbers? 3. none of your rolls gets a number divisible by 3? 4. you roll at least one 5? 5. the num...

See Answer

Q: A slot machine has three wheels that spin independently. Each has

A slot machine has three wheels that spin independently. Each has 10 equally likely symbols: 4 bars, 3 lemons, 2 cherries, and a bell. If you play, what is the probability that 1. you get 3 lemons? 2....

See Answer

Q: A survey was conducted in the United States and 10 countries of

A survey was conducted in the United States and 10 countries of Western Europe to determine the percentage of teenagers who had used marijuana and other drugs. The results are summarized in the follow...

See Answer

Q: A certain bowler can bowl a strike 70% of the time

A certain bowler can bowl a strike 70% of the time. If the bowls are independent, what the probability that she 1. goes three consecutive frames without a strike? 2. makes her first strike in the thir...

See Answer

Q: To get to work, a commuter must cross train tracks.

To get to work, a commuter must cross train tracks. The time the train arrives varies slightly from day to day, but the commuter estimates he’ll get stopped on about 15% of work days. During a certain...

See Answer

Q: Suppose that in your city 37% of the voters are registered

Suppose that in your city 37% of the voters are registered as Democrats, 29% as Republicans, and 11% as members of other parties (Liberal, Right to Life, Green, etc.). Voters not aligned with any offi...

See Answer