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Chapter 13: Q. 12 (page 855)
Find the value of each permutation.
The value of the given permutation is 1.
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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?
In Problems 11–16, construct a probability model for each experiment.
Tossing a fair coin, a fair die, and then a fair coin.
An urn contains 15 red balls and 10 white balls. Five balls are selected. In how many ways can the 5 balls be drawn from the total of 25 balls:
(a) If all 5 balls are red?
(b) If 3 balls are red and 2 are white?
(c) If at least 4 are red balls?
True or False In a probability model, the sum of all probabilities is 1.
The _____ of an event E is the set of all outcomes in the sample space S that are not outcomes in the event E.
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