# GRE - Probability & Statistics: Help & Review Chapter Exam

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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#### Question 1 1. What does the fundamental counting principle say?

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Question 2
2.
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 3 3. Kate and Kyle are playing a game. They must flip a coin and spin a spinner that has 12 equal sections numbered 1 through 12. What is the probability that Kyle will flip a heads and spin the spinner and get an even number?

#### Question 4 4. If you roll a die three times, what is the probability of rolling only even numbers?

#### Question 5 5. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. Calculate the median number of medals won during these Olympic Games.

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#### Question 6 6. Jimmy has the letters for the state of MISSISSIPPI written on cards, one letter per card. He turns the cards over and mixes up the order. If he selects one card at a time without replacing the cards, what is the probability that he will spell the word MISS in order?

#### Question 7 7. 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 8 8. Using the following table, determine the percent increase in people who ride their bike to work.

#### Question 9 9. Using the bar graph, 'Top Ten U.S. Rentals in 1999', about how much money did the movie American Pie have in revenue?

#### Question 10 10. On a 5 question, multiple-choice test, what is the probability that you will get at least one problem correct while guessing? Each question has 5 choices.

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Question 11
11.
Find the variance for the following data set:

16, 20, 14, 24, 16, 19, 30, and 8

#### Question 12 12. Which expression is equivalent to 3 x 6 x 4 x 2 x 5 ?

#### Question 13 13. Twelve employees at a local company decide to go out for lunch. Of the 12 employees, 8 are men and 4 are women. If a woman is the first to order, what is the probability that a man will be the next person to order lunch?

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Question 14
14.
Find the range for one standard deviation in the following data set:

16, 20, 14, 24, 16, 19, 30, and 8

#### Question 15 15. In Mr. Martin's math class there are 15 students out of which 4 will be selected to receive a special award. How many combinations of students can be selected?

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#### Question 16 16. You and your friend are among 15 students who will give speeches in front of the class. The teacher will randomly choose one of the 15 students to give the first speech. Each student has an equal probability of being chosen. Find the probability that either you or your friend will be chosen to give the first speech.

#### Question 17 17. The name Joe is very common at a school and 1 out of every 10 students go by that name. If there are 15 students in one class, what is the probability that at least one of them is named Joe?

#### Question 18 18. What is the relative frequency of losses for the Bears rounded to the closest whole percent?

#### Question 19 19. Solve the following combination:

#### Question 20 20. Using this chart, determine the percent increase of bus riders.

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#### Question 21 21. 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.

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Question 22
22.
Solve the expression 5*P*4 (*P* = permutation )

#### Question 23 23. Fifty tickets are sold for a raffle. You buy 2 tickets and your sister buys 4 tickets. One ticket is randomly chosen as the winning ticket. What is the probability that you or your sister wins the raffle?

#### Question 24 24. The probability of selecting a green ball from a bag is 1 out of 8, assuming there are 8 balls in the bag. If you select 3 balls, what is the probability of at least one of them being green?

#### Question 25 25. You roll a 6-sided die. What is the probability that the number rolled will be odd or prime? (1 is not a prime number)

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#### Question 26 26. Twenty students compete in a school-wide marathon and each student is of comparable running ability. Of the 20 students, 15 were boys and 5 were girls. What is the probability that boys will place 1st, 2nd, and 3rd in the marathon?

#### Question 27 27. Looking at the pie chart 'Who Sells The Most Fast Food?', how many sectors can be determined?

#### Question 28 28. Evaluate 6!

#### Question 29 29. The local bowling team plays in a 7-team league where each team plays other teams 4 times in a season. How many different games will be played in a season?

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Question 30
30.
Find the standard deviation for the following data set:

101, 106, 125, 142, 78, and 109

#### GRE - Probability & Statistics: Help & Review 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!