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1. |
In a college of 1000 girls, the dean wanted to choose a sample of 30 girls to represent the whole school. She wanted to determine average height. Which survey would get the best results? |
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A. |
Choose 30 gymnasts at the school. |
B. |
Choose every third girl out of 100 randomly selected names. |
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C. |
Choose 30 girls in the cafeteria at noon. |
D. |
Choose 30 girls on the basketball team. |
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Hint |
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2. |
A pin is dropped at random onto the square below. The point of the pin lands on one of the small regions. What is the probability that the point lands inside a red area? |
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A. |
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B. |
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C. |
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D. |
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3. |
A pin is dropped at random onto the square below. The point of the pin lands on one of the small regions. What is the probability that the point lands inside a yellow or green region? |
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A. |
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B. |
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D. |
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4. |
A restaurant offers a choice of four types of pasta with two types of sauce. Each pasta entrée comes with or without a meatball. How many possible entrées are there? |
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A. |
24 |
B. |
16 |
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C. |
12 |
D. |
8 |
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5. |
How many different ways can you arrange the letters in the word compare? |
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A. |
7! |
B. |
6! |
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C. |
4! |
D. |
5! |
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6. |
How many ways can a committee of 2 girls and 1 boy be formed from a class of 13 girls and 7 boys? |
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A. |
546 |
B. |
169 |
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C. |
91 |
D. |
1,092 |
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Hint |
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7. |
Suppose a number cube is rolled twice. What is the probability that an odd number will show both times? |
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A. |
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B. |
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C. |
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D. |
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8. |
A coin is weighted so that the probability of its landing heads is 0.6. If the coin is tossed twice, find the probability of getting two heads. |
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A. |
0.08 |
B. |
0.36 |
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C. |
0.24 |
D. |
0.16 |
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Hint |
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9. |
Which sample would provide the best data for a survey about favorite extra-curricular activities? |
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A. |
Members of the tennis team. |
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B. |
Students attending a Spanish Club meeting. |
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C. |
Participants at swim practice. |
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D. |
A random sample of students from 5 different homerooms. |
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Hint |
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10. |
How many outfits are possible when choosing from five shirts, four pairs of shorts, and six pairs of socks? |
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A. |
360 |
B. |
15 |
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C. |
120 |
D. |
54 |
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Hint |
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11. |
How many ways can you arrange the letters in the word compatible? |
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A. |
362,880 |
B. |
3,628,800 |
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C. |
39,916,800 |
D. |
100 |
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Hint |
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12. |
The chart shows the data from rolling a number cube. What is the experimental probability of rolling a 2? |
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A. |
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B. |
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D. |
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13. |
What is the theoretical probability of tossing a coin three times and getting heads on all three tosses? |
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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. |
There are 23 students in Mr. Blackwell’s science class. Three students are picked to go elementary schools that have students coming to the middle school next year. Each student will go to a different elementary school. Does this represent a combination or a permutation? How many ways can the students be chosen? |
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A. |
combination; 1,771 ways |
B. |
combination; 10,626 ways |
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C. |
permutation; 10,626 ways |
D. |
permutation; 1,771 ways |
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Hint |
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