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1. |
The scatter plot below shows the women's winning marathon times and the high temperatures on the marathon days. Which prediction equation best shows how marathon times and temperature are related? |
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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 best-fit line is drawn on a scatter plot showing the average daily temperature and the number of people at a public swimming pool. The slope of the line would probably be ________ |
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A. |
positive. |
B. |
negative. |
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C. |
undefined. |
D. |
zero. |
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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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A. |
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B. |
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C. |
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D. |
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4. |
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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A. |
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B. |
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C. |
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D. |
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5. |
Find the probability of drawing a red ace and a red king from a standard deck of cards without replacement. |
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A. |
 or about 0.0392 |
B. |
 or about 0.0060 |
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C. |
 or about 0.0015 |
D. |
 or about 0.0385 |
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6. |
A hockey team has red sweaters, white sweaters, and blue sweaters. The team uses red or blue pants and red or white socks. Find the number of possible uniforms. |
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A. |
10 |
B. |
7 |
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C. |
12 |
D. |
5 |
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7. |
Find 8P3. |
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A. |
1,680 |
B. |
21 |
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C. |
24 |
D. |
336 |
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Hint |
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8. |
A briefcase combination lock contains 4 digits. Each digit is a number between 0 and 9. How many different combinations are possible if each number can only be used once? |
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A. |
5,040 |
B. |
7,200 |
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C. |
10,000 |
D. |
40 |
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Hint |
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9. |
What is the probability of randomly drawing a ten or a club from a standard deck of 52-playing cards? |
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A. |
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B. |
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C. |
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D. |
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10. |
The table shows the results when a number cube was rolled. What is the experimental probability of rolling an even number? |
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A. |
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B. |
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C. |
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D. |
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11. |
The table shows the results of rolling a number cube over three separate experiments. What is the experimental probability of rolling a two for all three experiments? |
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A. |
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B. |
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C. |
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D. |
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12. |
Suppose that the mean is 50. How many standard deviations away is the value 65? |
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A. |
about 1 standard deviation |
B. |
cannot be determined from given information |
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C. |
within 1 standard deviation |
D. |
about 2 standard deviations |
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Hint |
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13. |
Two cubes are rolled. What is the probability that the sum of the numbers is 4 or 7? |
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A. |
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B. |
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C. |
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D. |
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14. |
Compute the variance and standard deviation for the set of {284, 298, 302, 305, 310, 314, 321, 331, 337, 348}. Round to the nearest tenth. |
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A. |
341.0; 18.5 |
B. |
335.7; 18.3 |
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C. |
289.2; 17.0 |
D. |
337.9; 18.4 |
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Hint |
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