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Textbooks / Statistics / Statistics: Informed Decisions Using Data 5 / Chapter 6.2 / Problem 39

?Sneeze According to a study done by Nick Wilson of Otago University Wellington, the probability a randomly selected individual will not cover his or h

Statistics: Informed Decisions Using Data | 5th Edition | ISBN: 9780134133539 | Authors: Michael Sullivan III ISBN: 9780134133539 240

Solution for problem 39 Chapter 6.2

Statistics: Informed Decisions Using Data | 5th Edition

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Statistics: Informed Decisions Using Data | 5th Edition | ISBN: 9780134133539 | Authors: Michael Sullivan III

Statistics: Informed Decisions Using Data | 5th Edition

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Problem 39

Sneeze According to a study done by Nick Wilson of Otago University Wellington, the probability a randomly selected individual will not cover his or her mouth when sneezing is 0.267. Suppose you sit on a bench in a mall and observe people’s habits as they sneeze.

(a) What is the probability that among 10 randomly observed individuals exactly 4 do not cover their mouth when sneezing?

(b) What is the probability that among 10 randomly observed individuals fewer than 3 do not cover their mouth?

(c) Would you be surprised if, after observing 10 individuals, fewer than half covered their mouth when sneezing? Why?

Step-by-Step Solution:

Step 1 of 5) Sneeze According to a study done by Nick Wilson of Otago University Wellington, the probability a randomly selected individual will not cover his or her mouth when sneezing is 0.267. Suppose you sit on a bench in a mall and observe people’s habits as they sneeze. (a) What is the probability that among 10 randomly observed individuals exactly 4 do not cover their mouth when sneezing (b) What is the probability that among 10 randomly observed individuals fewer than 3 do not cover their mouth (c) Would you be surprised if, after observing 10 individuals, fewer than half covered their mouth when sneezing Why Solution Step 1 The Department of Transportation wants to know if the mean travel time to work has decreased from 27.5 minutes. From this, we have H0: m = 27.5 minutes versus H1: m 6 27.5 minutes

Step 2 of 2

Chapter 6.2, Problem 39 is Solved
Textbook: Statistics: Informed Decisions Using Data
Edition: 5
Author: Michael Sullivan III
ISBN: 9780134133539

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