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What is the probability that a randomly chosen contestant tried singing into the ground or charmed 21-30 worms?

What is the probability that a randomly chosen contestant tried singing into the ground or charmed 21-30 worms?

College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 50E: Medicine Out of a group of 9 patients treated with a new drug, 4 suffered a relapse. Find the...
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Benjamin attended his town's annual Worm Charming Competition. Contestants are assigned to a square foot of land, where they have 30 minutes to "charm" worms to the surface of the dirt using a single technique. Benjamin observed contestants' charming techniques, and kept track of how many worms surfaced. The probability that a contestant tried singing into the ground is 0.5, the probability that a contestant charmed 21- 30 worms is 0.2 and the probability that a contestant tried singing into the ground and charmed 21-30 worms is 0.1. What is the probability that a randomly chosen contestant tried singing into the ground or charmed 21-30 worms?
Transcribed Image Text:Benjamin attended his town's annual Worm Charming Competition. Contestants are assigned to a square foot of land, where they have 30 minutes to "charm" worms to the surface of the dirt using a single technique. Benjamin observed contestants' charming techniques, and kept track of how many worms surfaced. The probability that a contestant tried singing into the ground is 0.5, the probability that a contestant charmed 21- 30 worms is 0.2 and the probability that a contestant tried singing into the ground and charmed 21-30 worms is 0.1. What is the probability that a randomly chosen contestant tried singing into the ground or charmed 21-30 worms?
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