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1. |
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. |
2.23 |
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C. |
2.46 |
D. |
2.00 |
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Hint |
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2. |
Find the standard deviation of the data in the stem-and-leaf plot to the nearest hundredth. |
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A. |
217.00 |
B. |
10.72 |
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C. |
11.74 |
D. |
228.50 |
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Hint |
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3. |
What is n if n[P(15, 5)] = P(14, 6)?. |
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A. |
120 |
B. |
9 |
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C. |
15 |
D. |
6 |
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Hint |
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4. |
How many lines are determined by 7 points, no three of which are collinear? |
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A. |
42 |
B. |
200 |
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C. |
21 |
D. |
105 |
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Hint |
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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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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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6. |
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 0.0015 |
B. |
or about 0.0060 |
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C. |
or about 0.0385 |
D. |
or about 0.0392 |
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Hint |
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7. |
Susan forgot to study for her economics quiz. She guessed on all five true/false questions. Does this situation represent a binomial experiment? |
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A. |
Yes, because each trial has exactly two outcomes; the probability of each trial is ; there are five trials and these are independent. |
B. |
Yes, because the questions are dependent and mutually inclusive. |
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C. |
Yes, because the answer is right or wrong. |
D. |
Yes, because the trials are selected at random. |
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Hint |
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8. |
The probability of a basketball player making a free throw during the regular season is . During a championship game, this player made two out of three attempts. Based on his regular season record, what was the probability of making two out of three attempts? |
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A. |
or about 0.1389 |
B. |
or about 0.3472 |
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C. |
or about 0.6944 |
D. |
or about 0.2778 |
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Hint |
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9. |
Alphonse went to the supermarket. He needs one vegetable and one type of beverage for the week. The supermarket has celery, broccoli, carrots, cucumbers, and peas. They also have pop, milk, orange juice and bottled water. How many different ways can Alphonse make his selection? |
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A. |
10 |
B. |
16 |
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C. |
9 |
D. |
20 |
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Hint |
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10. |
In baseball, a cycle occurs when someone hits a single, double, triple, and home run in the same game. Assuming that a player bats only four times in a game, how many different ways can someone hit for the cycle? |
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A. |
6 |
B. |
12 |
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C. |
256 |
D. |
24 |
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Hint |
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11. |
Suppose three coins are tossed. What is the probability that two will turn up heads, and one turn up tails? |
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A. |
0.625 |
B. |
0.125 |
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C. |
0.375 |
D. |
0.75 |
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Hint |
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12. |
According to NFL statistics, the Cincinnati Bengals will be blown out in 5 out of 16 games, regardless of opponent. What are the odds of Cincinnati playing a close game? |
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A. |
11:16 |
B. |
16:5 |
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C. |
11:5 |
D. |
5:11 |
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Hint |
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13. |
Max gets to choose 6 balloons from a group of 10 red balloons and 15 blue balloons. What is the probability that at least 4 balloons are red? |
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A. |
0.125 |
B. |
0.147 |
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C. |
0.023 |
D. |
0.057 |
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Hint |
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14. |
In a survey of 100 people, 65 liked the color blue, and 45 liked the color green. If 20 people disliked both green and blue, how many people liked both? |
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A. |
15 |
B. |
10 |
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C. |
30 |
D. |
65 |
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Hint |
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15. |
Which set of data is positively skewed? |
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A. |
{9, 9, 10, 10, 10, 11, 11, 13, 15, 17} |
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B. |
{9, 10, 11, 12, 13, 14, 15, 16, 17} |
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C. |
{9, 11, 13, 14, 14, 15, 15, 15, 17, 17} |
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D. |
{10, 11, 12, 12, 13, 13, 13, 14, 14, 15, 16} |
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Hint |
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16. |
Describe the set of data {33, 35, 38, 44, 45, 45, 46, 46, 46, 47}. |
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A. |
positively skewed |
B. |
cannot be determined |
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C. |
negatively skewed |
D. |
normal distribution |
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Hint |
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17. |
In order to determine what American people like to do, a group of 100 random American men were asked what their hobbies were. Is this a random sample? If not, why is it not? |
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A. |
yes |
B. |
no, because it only includes Americans |
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C. |
no, because no women are included |
D. |
no, because it is based on opinion |
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Hint |
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18. |
In order to determine the most popular ride at Cedar Point, a researcher interviewed people in the parking lot as they were leaving Cedar point. Assuming that everyone went on the rides that they like, is this a random sample? If not, why is it not? |
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A. |
yes |
B. |
no, because some of the lines may have been long |
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C. |
no, because some of the rides may be new |
D. |
no, because it does not include other parks |
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Hint |
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