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AP Statistics Binomial Practice Test |
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Disjointed events are___________________. |
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2 |
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If 65% of the voters believe that the president is doing a good job, what is
the probability of selecting a sample of 150 voters in which 55% to 70%
think the president is doing a good job? |
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3 |
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Give a distribution, how would you calculate probabilities? |
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4 |
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If there is a 60 % chance that a person will be right, what is the
probability of no more than three being wrong in a 5 person group? |
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5 |
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Which of the following are not true about discrete probability
distributions? |
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a) Negative probabilities are not possible |
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b) The probabilities add up to 1. |
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c) The distributions are symmetrical |
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d) The standard distribution can have a value which is greater than the mean |
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e) All the answers are true. |
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6 |
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Seven people are are seated in a row at the theater. Three have red hair.
How many different ways are there to seat the people with red hair? |
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7 |
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If 70 % of Americans like country music, what is the probability of having
at least five people in a 20 person group who do not like country music? |
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8 |
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Albert rolls a single six sided die multiple times. What is
the probability that he gets
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a six in less than 12 rolls?
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9 |
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Assume the probability that a golfer will shoot par is 0.3.
What is the probability that he will shoot par for the 1st time on exactly
his 4th hole? |
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10 |
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Sally and Juan form a golf team. Sally's standard deviation is 4 while
Juan's is 3. What is the standard deviation of their combined scores? |
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11 |
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Find the mean for a binomial distribution given n = 10, p = 0.8 |
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12 |
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Find the standard deviation for a binomial distribution given n = 10, p =
0.8 |
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13 |
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Bob's quiz standard deviation is 2 and Martha's is 3. Find the standard
deviation of their combined quiz results. Assume Bob's score is independent
of Martha's. |
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14 |
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Bob's quiz standard deviation is 2 and Martha's is 3. Find the standard
deviation of the distribution resulting from Bob's quiz score minus Martha's
score on the same quiz. Assume Bob's score is independent of Martha's. |
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15 |
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If 10% of all the apples picked by Martha's are bad. What is the
average number of bad apples that would be found in a barrel of 200 apples? |
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16 |
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What is the standard deviation of bad apples in the above problem? |
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What is the probability that there will be no more than 20 bad apples in a
barrel of 200? |
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18 |
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What is the probability that Martha will pull out the first bad apple
within the
first three tries (assume replacement)? |
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19 |
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What is the probability that Martha will pull out the first bad apple on the
second try (assume replacement)? |
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20 |
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Describe a geometric distribution? |
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21 |
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What is the key difference between a Geometric and binomial distribution? |