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1. |
Choose the scatter plot that has a prediction equation with a negative slope. |
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2. |
Find the standard deviation of the set {4, 7, 3, 8, 2, 6, 5, 8, 3, 2} to the nearest hundredth. |
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A. |
2.35 |
B. |
2.00 |
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C. |
2.46 |
D. |
2.23 |
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3. |
Four blocks are placed in a paper bag. Each block is marked with a different letter, A, C, T, or E. Several children are playing a game by picking three blocks out of the bag without looking into the bag as they choose. Anyone who picks the three blocks that spell CAT wins a point. What is the probability of picking the blocks marked C, A, and T? |
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4. |
Students at Garner Middle School are given the opportunity to determine the school's mascot, the mascot's name, and the school colors. The choices are narrowed down to those shown in the table below. What is the probability that the students will choose a lion named Gus for their mascot? |
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5. |
A box of crayons contains 8 blue, 9 red, and 13 yellow. Find the probability of first choosing a yellow, then a blue, and then another yellow crayon if there is no replacement. |
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6. |
A line of fit is drawn on a scatter plot showing the number of pets owned by automobile owners and the number of miles driven each month. What would probably be the best description of the slope of this line? |
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A. |
negative |
B. |
positive |
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C. |
zero |
D. |
undefined |
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7. |
Find 12P4. |
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A. |
11,880 |
B. |
95,040 |
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C. |
19,958,400 |
D. |
42 |
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8. |
How many different ways can a coach make a team of 18 players from a tryout of 20 people? |
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A. |
3,420 |
B. |
190 |
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C. |
380 |
D. |
6,840 |
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Hint |
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9. |
A number cube is rolled and a coin is tossed. What is the probability of rolling a 5 and tossing tails? |
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10. |
Two number cubes are rolled. What is the probability of rolling a sum of 9 or a sum that is even? |
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11. |
What is the probability of randomly drawing a ten or a club from a standard deck of 52-playing cards? |
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12. |
The table shows the results when a number cube was rolled. What is the experimental probability of rolling a one? |
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13. |
The table shows the results of rolling a number cube over three separate experiments. What is the experimental probability of rolling a number that is greater then or equal to five? |
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14. |
Suppose that the mean is 50. How many standard deviations away is the value 65? |
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A. |
within 1 standard deviation |
B. |
cannot be determined from given information |
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C. |
about 1 standard deviation |
D. |
about 2 standard deviations |
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Hint |
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