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Probability Theory & Statistics Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. Sam has to find one more pair of cards to win a memory game. Of the cards left, two show apples, two show oranges, and two show grapes. What are the odds of Sam turning over two cards and getting two cards with grapes?

Question 2 2. A car lot has 50 Model A cars, 20 Model B cars, and 5 Model C cars. Joe has to sell 1 more Model A car and 1 more Model C car to get a bonus. What are the chances of this occurring if he sells only two more cars?

Question 3 3. Amanda has room in her rented limousine to take two of her friends while she celebrates her birthday. Her best friends are Barbara, Samantha, Rachel, and Kim. So as not to hurt anyone's feelings, she chooses each name randomly from a hat without putting the previous selection back. What are the chances she'll take Rachel and Kim?

Question 4 4.

Kyle works at a local music store. The store receives a shipment of new CDs in a box. In the shipment, there are 10 country CDs, 5 rock CDs, 12 hip hop CDs, and 3 jazz CDs.

What is the probability that the first CD Kyle chooses from the box will be country?

Question 5 5.

Kyle works at a local music store. The store receives a shipment of new CDs in a box. In the shipment, there are 10 country CDs, 5 rock CDs, 12 hip hop CDs, and 3 jazz CDs.

What is the probability that Kyle will select a jazz CD from the box, and then, without replacing the CD, select a country CD?

Page 2

Question 6 6. Using a spinner with 12 equal sections numbered 1 through 12, what is the probability that Jim will spin a number less than 8?

Question 7 7. Which of these is a non-mutually exclusive event?

Question 8 8. What are the odds of getting two 5 balls from a lottery machine with 35 balls, where each ball has a different number on it?

Question 9 9. What are the odds of getting a 1 and then a 2 from the same lottery machine with 35 balls (assuming all the balls are numbered 1-35 with no repeats)?

Question 10 10. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. If there is an outlier, identify it from the number of medals won during these Olympic Games.

Page 3

Question 11 11. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. Calculate the range number of medals won during these Olympic Games.

Question 12 12. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. Calculate the mode number of medals won during these Olympic Games.

Question 13 13. Scatter plots are used to look for what?

Question 14 14. What kind of graph is shown?

Question 15 15. What kind of graph is shown?

Page 4

Question 16 16. Which axis of a histogram usually shows the categories into which the various members of a data set fall?

Question 17 17. What can we show using a histogram?

Question 18 18. What is a graphical representation of the distribution of data?

Question 19 19. 'Variance' attempts to estimate

Question 20 20. Range, standard deviation, and variance are 'similar' in that each looks at

Page 5

Question 21 21. Professor Dublin wants to ensure he is thorough in his review of student performance, so he decides to calculate 'standard deviation' as well. What must Professor Dublin do to figure out this measure of variability?

Question 22 22. The bar graph shows the top five grossing movies from 2015. What was the second highest grossing movie?

Question 23 23. Refer to the pie chart showing top fast food chains by 2015 sales. How many sectors does the chart contain?

Question 24 24. The bar graph shows the top five grossing movies from 2015. Which movie made approximately $450 million?

Question 25 25. What are the odds of someone choosing a circle, a triangle, and a square in that order from the following group of shapes?

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Question 26 26.

Kyle works at a local music store. The store receives a shipment of new CDs in a box. In the shipment, there are 10 country CDs, 5 rock CDs, 12 hip hop CDs, and 3 jazz CDs.

What is the probability that the first CD that Kyle pulls from the box will NOT be hip hop?

Question 27 27. Which one of the following events is mutually exclusive?

Question 28 28. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. Calculate the mean number of medals won during these Olympic Games. (Round it to the nearest whole number.)

Question 29 29. Line graphs are used to look for what?

Question 30 30. Histograms are very similar to what other graphical representation of numbers?

Probability Theory & Statistics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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