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Chapter 13: Q. 20 (page 855)
Use the formula to find the value of each combination.
The value of the given combination is 18.
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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?
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 between \(10,000 and \)29,999, inclusive?
In Problems 11–16, construct a probability model for each experiment.
Tossing three fair coins once.
Use the information given in the figure.
How many are in set B?
An urn contains 7 white balls and 3 red balls. Three balls are selected. In how many ways can the 3 balls be drawn from the total of 10 balls:
(a) If 2 balls are white and 1 is red?
(b) If all 3 balls are white?
(c) If all 3 balls are red?
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