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Chapter 13: Q. 4 (page 864)
True or False In a probability model, the sum of all probabilities is 1.
True statement
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If A and B are finite sets, the Counting Formula states that______.
True or False If a task consists of a sequence of three choices in which there are p selections for the first choice, q selections for the second choice, and r selections for the third choice, the task of making these selections can be done in different ways.
In a survey about the number of TV sets in a house, the following probability table was constructed:
Find the probability of a house having:
(a) 1 or 2 TV sets
(b) 1 or more TV sets
(c) 3 or fewer TV sets
(d) 3 or more TV sets
(e) Fewer than 2 TV sets
(f ) Fewer than 1 TV set
(g) 1, 2, or 3 TV sets
(h) 2 or more TV sets
Problems 63–66 are based on a consumer survey of annual incomes in 100 households. The following table gives the data.
What is the probability that a household has an annual income of $30,000 or more?
Problems 63–66 are based on a consumer survey of annual incomes in 100 households. The following table gives the data.
What is the probability that a household has an annual income of less than $20,000?
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