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1. |
Find the standard deviation of the set {15, 42, 30, 22, 19, 32} to the nearest hundredth. |
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A. |
9.91 |
B. |
10.14 |
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C. |
9.05 |
D. |
10.03 |
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Hint |
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2. |
How many ways can seven books be arranged on a shelf if one of the books is an algebra text and it must be in the center? |
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A. |
120 |
B. |
50 |
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C. |
720 |
D. |
625 |
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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. |
9 |
B. |
15 |
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C. |
120 |
D. |
6 |
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Hint |
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4. |
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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5. |
Jessie has 3 beaded bracelets, and 4 gold bracelets. She randomly selects 2 to wear to school. What is the probability that she will choose two beaded bracelets? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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6. |
3 cards are drawn from a standard deck of 52 cards. Find the probability of drawing either 3 red cards or 3 face cards. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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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 the answer is right or wrong. |
B. |
Yes, because the trials are selected at random. |
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C. |
Yes, because each trial has exactly two outcomes; the probability of each trial is ; there are five trials and these are independent. |
D. |
Yes, because the questions are dependent and mutually inclusive. |
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Hint |
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8. |
The Boor Foundation conducted a poll asking people to name the most serious problem facing the nation. Of the 600 people polled, 48% of the randomly selected people answered education. Find the margin of error for this sampling. |
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A. |
0.5200 |
B. |
0.2039608 |
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C. |
24.96 |
D. |
0.0407922 |
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Hint |
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9. |
In 1992, 92% of the people surveyed felt that professional athletes were overpaid. If the margin of error for the sampling was 3%, how many people were surveyed? |
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A. |
736 |
B. |
327 |
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C. |
225 |
D. |
2944 |
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Hint |
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10. |
Which of the following is an example of a dependent event? |
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A. |
rolling a die |
B. |
entering a digit of a telephone number |
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C. |
tossing a coin |
D. |
picking a numbered ball in a lottery |
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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. |
0.75 |
B. |
0.625 |
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C. |
0.375 |
D. |
0.125 |
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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. |
11:5 |
B. |
11:16 |
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C. |
16:5 |
D. |
5:11 |
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Hint |
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13. |
Eddie flips a coin, rolls a die, and draws one card from a standard deck of 52. What is the probability that he turned up heads, rolled a prime number, and picked a king or queen? |
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A. |
0.026 |
B. |
0.019 |
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C. |
0.038 |
D. |
0.051 |
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Hint |
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14. |
There are 25 things that can break on a car. Seven are maintenance problems, 14 are small repairs, and 4 are major problems. If a problem occurs at random, what is the probability that it is not a major problem? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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15. |
In the set of data {113, 146, 146, 154, 157, 170, 181}, which measure of central tendency has the highest value? What is the value? |
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A. |
median, 154 |
B. |
mode, 146 |
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C. |
mean, 152 |
D. |
mean, 178 |
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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. |
Which of the following is an example of a continuous probability distribution? |
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A. |
the rent for an apartment in a particular city |
B. |
the amount of time it takes to run a mile |
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C. |
the number of people who like chocolate ice cream |
D. |
the number of stars that are bright enough to see |
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Hint |
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18. |
Which of the following is not a necessary condition in a binomial experiment? |
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A. |
There is a fixed number of trials. |
B. |
The probabilities of each trial are the same. |
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C. |
There are exactly two possible outcomes for each trial. |
D. |
The probability of each outcome is the same. |
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Hint |
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