Exam 4: Probability and Counting Rules
Exam 1: The Nature of Probability and Statistics47 Questions
Exam 2: Frequency Distributions and Graphs73 Questions
Exam 3: Data Description73 Questions
Exam 4: Probability and Counting Rules85 Questions
Exam 5: Discrete Probability Distributions69 Questions
Exam 6: The Normal Distribution81 Questions
Exam 7: Confidence Intervals and Sample Size75 Questions
Exam 8: Hypothesis Testing83 Questions
Exam 9: Testing the Difference Between Two Means, Two Variances, and Two Proportions70 Questions
Exam 10: Correlation and Regression63 Questions
Exam 11: Other Chi-Square Tests47 Questions
Exam 12: Analysis of Variance54 Questions
Exam 13: Nonparametric Statistics63 Questions
Exam 14: Sampling and Simulation58 Questions
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If two dice are rolled one time, find the probability of getting a sum of 6.
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(Multiple Choice)
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Correct Answer:
C
Two events are mutually exclusive if they cannot both occur.
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Correct Answer:
True
If one card is drawn from an ordinary deck of cards, what is the probability that the card will be an ace, a king of hearts, or a spade?
(Multiple Choice)
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Two events A and B are ______________ if the fact that A occurs does not affect the probability of B occurring.
(Short Answer)
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If a sportscaster makes an educated guess as to how well a team will do this season, he is using what type of probability?
(Multiple Choice)
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If a coin is tossed three times, the probability that the coin lands on heads at least one of those three times is 7/8.
(True/False)
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A group of 10 male and 8 female students is talking about going out for pizza. If 50% of the male students actually go and 25% of the female students actually go, find the probability that a random student who goes out for pizza is female.
(Multiple Choice)
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Below are listed the numbers of engineers in various fields by sex. Choose one engineer at random. Find
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If one tosses a coin enough times, the number of heads and tails will tend to "even out." This is an example of the law of ______________.
(Short Answer)
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Classical probability was the first type of probability studied formally by mathematicians of the 17th and 18th centuries.
(True/False)
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There are 3 different mathematics courses, 5 different science courses, and 2 different history courses. If a student must take one of each, how many different ways can this be done?
(Multiple Choice)
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In a physics class there are 10 juniors and 20 males; so there must be 30 male juniors in this class.
(True/False)
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The number of different arrangements of four pictures from a selection of ten pictures is 5,040.
(True/False)
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There are 3 first grade children, 5 second grade children, and 6 third grade children in a room. When choosing two children, what is the conditional probability of choosing a second grade child, given that either a first or a third grade child was chosen first?
(Multiple Choice)
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If the probability that it will rain tomorrow is 0.37, what is the probability that it will not rain tomorrow?
(Multiple Choice)
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Urn 1 contains 6 red balls and 4 black balls. Urn 2 contains 4 red balls and 6 black balls. Urn 3 contains 4 red balls and 5 black balls. If an urn is selected at random and a ball is drawn, find the probability it will be red.
(Multiple Choice)
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If there are 18 equally likely events, then the probability of the first one occuring is 1/18.
(True/False)
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