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Chapter 13: Q. 18 (page 855)
Use the formula to find the value of each combination.
The value of the given combination is 15.
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Find the value of each permutation.
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?
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 certain Precalculus class, there are 18 freshmen and 15 sophomores. Of the 18 freshmen, 10 are male, and of the 15 sophomores, 8 are male. Find the probability that a randomly selected student is:
(a) A freshman or female
(b) A sophomore or male
On the “Price is Right” there is a game in which a bag is filled with 3 strike chips and 5 numbers. Let’s say that the numbers in the bag are 0, 1, 3, 6, and 9. What is the probability of selecting a strike chip or the number 1?
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