Exam 12: Counting and Probability
Exam 1: Functions and Their Graphs297 Questions
Exam 2: Linear and Quadratic Functions302 Questions
Exam 3: Polynomial and Rational Functions354 Questions
Exam 4: Exponential and Logarithmic Functions517 Questions
Exam 5: Trigonometric Functions354 Questions
Exam 6: Analytic Trigonometry342 Questions
Exam 7: Applications of Trigonometric Functions105 Questions
Exam 8: Polar Coordinates; Vectors253 Questions
Exam 9: Analytic Geometry200 Questions
Exam 10: Systems of Equations and Inequalities235 Questions
Exam 11: Sequences; Induction; the Binomial Theorem238 Questions
Exam 12: Counting and Probability115 Questions
Exam 13: A Preview of Calculus: the Limit, Derivative, and Integral of a Function145 Questions
Exam 14: Foundations: a Prelude to Functions234 Questions
Exam 15: Graphing Utilities29 Questions
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-The psychology lab at a college is staffed by 9 male doctoral students, 8 female doctoral students, 16 male undergraduates, and 6 female undergraduates. If a person is selected at random from the group, find the
Probability that the selected person is an undergraduate or a female.
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-From 9 names on a ballot, a committee of 5 will be elected to attend a political national convention. How many different committees are possible?
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-How many 4-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 if the first digit cannot be 0? Repeated digits are allowed.
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-The table below shows the results of a consumer survey of annual incomes in 100 households. Income Number of households \ 0-14,999 9 \ 15,000-24,999 25 \ 25,000-34,999 27 \ 35,000-44,999 25 \ 45,000 or more 14 What is the probability that a household has an annual income between $15,000 and $44,999 inclusive?
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-In survey of 50 households, 25 responded that they have an HDTV television, 35 responded that they had a multimedia personal computer and 15 responded they had both. How many households had neither an HDTV
Television nor a multimedia personal computer?
(Multiple Choice)
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-List all the combinations of 4 objects 1, 2, 3, and 4 taken 3 at a time. What is C(4, 3)?
(Multiple Choice)
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-A survey of 2,504 credit card users indicated that 1,167 had bought books online, 1,226 had bought music online, 431 had bought pet supplies online, 128 had bought both books and music, 227 had bought both books and pet
Supplies, 198 had bought both music and pet supplies, and 99 had bought all three. How many credit card users
Did not buy any of the three? How many bought either books or pet supplies but not music?
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Use the information given in the figure.
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How many are in set A?
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-A man has 10 shirts and 9 ties. How many different shirt and tie arrangements can he wear?
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Write the word or phrase that best completes each statement or answers the question.
Construct a probability model for the experiment.
-Rolling a 6-sided fair die once
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-The table below shows the results of a consumer survey of annual incomes in 100 households. Income Number of households \ 0-14,999 7 \ 15,000-24,999 20 \ 25,000-34,999 30 \ 35,000-44,999 26 \ 45,000 or more 17 What is the probability that a household has an annual income less than $25,000?
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Choose the one alternative that best completes the statement or answers the question.
-In a survey about the number of siblings of college students, the following probability table was constructed: Number of Siblings Probability 0 0.25 1 0.34 2 0.21 3 0.09 4 or more 0.11 What is the probability that a student 3 or more siblings?
(Multiple Choice)
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Write the word or phrase that best completes each statement or answers the question.
Construct a probability model for the experiment.
-Tossing one fair coin three times
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-Sam estimates that if he leaves his car parked outside his office all day on a weekday, the chance that he will get a parking ticket is 22%. If Sam leaves his car parked outside his office all day next Tuesday, what is the chance
That he will not get a parking ticket?
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-A spinner has regions numbered 1 through 21. What is the probability that the spinner will stop on an even number or a multiple of 3?
(Multiple Choice)
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Use the information given in the figure.
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How many are in B or ?
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-In a survey of 189 vacationers in a popular beach resort town, 73 indicated they would consider buying a home there, 73 would consider buying a beach villa, 59 would consider buying a lot, 24 would consider both a home
And a villa, 27 would consider both a home and a lot, 26 would consider both a villa and a lot, and 12 would
Consider all three. How many vacationers would not consider any of the three? How many would consider only
A home?
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-An exam consists of 9 multiple-choice questions and 6 essay questions. If the student must answer 5 of the multiple-choice questions and 3 of the essay questions, in how many ways can the questions be chosen?
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