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1. |
The table shows the sales of athletic footwear for a recent year. Which measure of central tendency is the greatest? |
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A. |
median |
B. |
mean |
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C. |
none |
D. |
mode |
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Hint |
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2. |
The KlipKlamp company manufactures paper clips with masses that are normally distributed with a mean of 2.5 grams and a standard deviation of 0.125 gram. What percent of the clips are more than 2.75 grams? |
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A. |
0.5% |
B. |
5% |
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C. |
2.5% |
D. |
16% |
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Hint |
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3. |
Kim needs to choose a 4-digit personal identification number (PIN) to use with her phone card. She may use a digit only once. How many different PINs can she choose from? |
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A. |
5040 |
B. |
5610 |
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C. |
900 |
D. |
8020 |
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Hint |
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4. |
Evaluate  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
4,032 |
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Hint |
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5. |
Find C(10, 3). |
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A. |
34 |
B. |
120 |
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C. |
144 |
D. |
80 |
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Hint |
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6. |
Cynthia has 3 black rabbits and 4 white rabbits. She randomly picks 2 for her neighbor's grandson. Find the probability of picking 1 black rabbit and 1 white rabbit. |
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A. |
 |
B. |
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C. |
55% |
D. |
92% |
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Hint |
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7. |
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 0.0015 |
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C. |
 or about 0.0385 |
D. |
 or about 0.0060 |
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Hint |
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8. |
While watching a television quiz show, Lou guessed on the 10 true/false questions. What is the probability of his getting 6 questions correct and 4 questions wrong? |
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A. |
210 |
B. |
 or about 0.205 |
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C. |
 or about 0.1770 |
D. |
 or about 0.3048 |
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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. |
16 |
B. |
9 |
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C. |
20 |
D. |
10 |
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Hint |
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10. |
Suppose two dice are rolled. What is the probability of rolling doubles? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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11. |
Suppose two dice are rolled. What is the probability of rolling a sum greater than an eight? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
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Hint |
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12. |
One card is drawn from a standard deck of cards. What is the probability that it is either a black card or a face card? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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13. |
An office of 30 people is having a 10-person meeting, with the participants being chosen at random. If the department is comprised of 22 women and 8 men, what is the probability that at most 2 men are selected? |
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A. |
0.274 |
B. |
0.226 |
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C. |
0.452 |
D. |
0.548 |
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Hint |
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14. |
Which measure of variation does not depend on the mean? |
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A. |
range |
B. |
mode |
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C. |
variance |
D. |
standard deviation |
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Hint |
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15. |
Describe the set of data
{33, 35, 38, 44, 45, 45, 46, 46, 46, 47}. |
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A. |
negatively skewed |
B. |
normal distribution |
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C. |
cannot be determined |
D. |
positively skewed |
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Hint |
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16. |
Suppose a mathematician has a  probability of answering any math question correctly. What is the probability that he answers at least 2 out of 5 questions correctly? |
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A. |
0.0081 |
B. |
0.00856 |
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C. |
0.00046 |
D. |
0.99954 |
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Hint |
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17. |
In a recent survey, 56% of the people agreed with choice A. With probability 0.95, what is the minimum percentage of people in the population who agree with choice A, if the margin of error is 8 %? |
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A. |
48% |
B. |
51% |
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C. |
43% |
D. |
52% |
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Hint |
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18. |
In a recent poll, 56 out of 140 people said no. What is the margin of error? |
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A. |
about 4% |
B. |
about 5% |
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C. |
about 8% |
D. |
about 9% |
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Hint |
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