8. 5% of all men wear a XXL sized t-shirt. If 20 men are randomly selected, find the probability that: (a) exactly 3 men wear XXL. (b) no one wears XXL. (c) 0 or 1 man wears XXIL.
8. 5% of all men wear a XXL sized t-shirt. If 20 men are randomly selected, find the probability that: (a) exactly 3 men wear XXL. (b) no one wears XXL. (c) 0 or 1 man wears XXIL.
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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help please Q18 : abc & Q19 : abc
Transcribed Image Text:Find each probability in Exercises 18 – 19 using the binomial probability formula.
18. 5% of all men wear a XXL sized t-shirt. If 20 men are randomly selected, find the probability that:
(a) exactly 3 men wear XXL.
(b) no one wears XXL.
(c) 0 or 1 man wears XXL.
19. A coin is tossed 30 times.
(a) Find the probability of getting exactly 15 heads.
mot obn
(b) Find the probability of getting exactly 5 heads.
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wm woH
(c) Suppose you flipped a coin 30 times, and got 5 heads and 25 tails. What conclusion might youI
draw about the coin?
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