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1. |
What is the upper quartile for the quiz scores? |
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A. |
17 |
B. |
12 |
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C. |
13 |
D. |
20 |
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Hint |
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2. |
Which type of display is most appropriate for showing the ages of workers and their annual income? |
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A. |
circle graph |
B. |
histogram |
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C. |
scatter plot |
D. |
line plot |
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Hint |
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3. |
There are 11 pennies, 7 nickels, and 9 dimes in a bowl. If 2 coins are selected at random, find the probability of selecting a nickel then a dime if the first coin is not replaced. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
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Hint |
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4. |
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. |
 |
B. |
 |
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C. |
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D. |
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Hint |
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5. |
Meng conducted a survey to determine the favorite flavor of ice cream in his hometown. Fifteen of the fifty people he surveyed liked strawberry best. How many of the 3,500 residents in the town would you expect to like strawberry best? |
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A. |
750 |
B. |
150 |
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C. |
560 |
D. |
1,050 |
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Hint |
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6. |
Find the fair game. |
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A. |
Serena and Allie have two chips. One is red on both sides and one is red on one side and blue on the other side. Each girl tosses a chip. Serena scores one point if both chips match. Allie scores one point if the chips don't match. |
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B. |
Serena and Allie have two chips. One is red on one side and blue on the other side. The other chip is red on one side and green on the other side. Each girl tosses a chip. Serena scores one point if both chips match. Allie scores one point if the chips don't match. |
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C. |
Serena and Allie have two chips. One is red on both sides and one is red on one side and blue on the other side. Each girl tosses a chip. Serena scores one point if a chip shows red. Allie scores one point if a chip shows blue. |
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D. |
Serena and Allie have two chips. Both chips are red on one side and blue on the other side. Each girl tosses a chip. Serena scores one point if a chip shows red. Allie scores one point if a chip shows blue. |
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Hint |
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7. |
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 2 is in the ones place and the second draw is a 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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8. |
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: RGBWFind the best estimate of the number of green balls in the bag. |
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A. |
3 |
B. |
9 |
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C. |
6 |
D. |
1 |
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Hint |
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