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1. |
A cooler contains 5 cans of each flavor of soft drink: cola, lemon-lime, grape, and root beer. Find the probability of one person randomly picking a cola, then another person randomly selecting root beer. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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2. |
A set of counters is numbered 1, 2, 3, …, 12. Suppose you draw one counter without looking. What is the probability of choosing a number less than 4? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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3. |
A marketing company is conducting a survey to determine America's most popular professional football team. Where would they be most likely to obtain a random sample? |
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A. |
at a Cleveland Browns game |
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B. |
Chicago's O'Hare Airport |
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C. |
in front of the White House |
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D. |
by calling people from around the country on the telephone |
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Hint |
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4. |
Design a pair of dice so the probability that a player using Die A scores a point on a turn is . In other words, the player using Die A has a chance of rolling a higher number than the player using Die B. |
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A. |
Put a 5 on each face of Die A. Put a 1 on three faces of Die B and a 2 on the other three faces. |
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B. |
Put a 4 on each face of Die A. Put a 3 on five faces of Die B and a 6 on the other face. |
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C. |
Put a 1 on three faces of Die A and a 6 on the other three faces. Put a 3 on one face of Die B and a 5 on the other five faces. |
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D. |
Put a 2 on four faces of Die A and a 4 on the other two faces. Put a 5 on each face of Die B. |
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Hint |
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5. |
Suppose you have a bag filled with 6 blocks numbered from 1–6. You consecutively choose three blocks, without replacement to form a three-digit number. You choose the first number and put it in either the hundreds, tens, or ones place. You choose the next number and put it in one of the remaining places, and so on. The object of the game is to create the greatest three-digit number. What is the probability of getting a higher number in the third draw (than the second draw) if a 4 is in the tens place and the second draw is a 5? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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6. |
Taylor and Isabel played a game with red, blue, white, and green balls. They had a bag with 10 balls. They took 4 samples of 4 balls at a time. Sample 1: RRBB Sample 2: BGRR Sample 3: RWRB Sample 4: RGBW Find the best estimate of the number of red balls in the bag. |
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A. |
3 |
B. |
9 |
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C. |
1 |
D. |
5 |
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Hint |
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7. |
What is the third quartile of this set of test scores? 63, 72, 74, 83, 91, 92, 95 |
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A. |
70 |
B. |
93 |
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C. |
72 |
D. |
92 |
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Hint |
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8. |
About what percentage of the test scores below are between 55 and 95? |
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ST10-001W-008550 |
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A. |
60% |
B. |
50% |
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C. |
75% |
D. |
25% |
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Hint |
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