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Answer: Usual and Unusual Values. In Exercises, consider a

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 11BSC Chapter 3.4

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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Problem 11BSC

 

Usual and Unusual Values. In Exercises, consider a value to be unusual if its z score is less than −2 or greater than 2.

Earthquakes The Southern California Earthquake Data Center recorded magnitudes (Richter scale) of 10, 594 earthquakes in a recent year. The mean is 1.240 and the standard deviation is 0.578. Consider the magnitudes that are unusual. What are the magnitudes that separate the unusual earthquakes from those that are usual?

Step-by-Step Solution:

Answer

Step 1 of 3</p>

Given Mean(=1.24

              SD()=0.578

Given Z score is less than −2 or greater than 2.

Step 2 of 3</p>

z=(x-)/

2=(x-1.24)/0.578

1.156=(x-1.24)

x=1.156+1.24=2.396

Step 3 of 3

Chapter 3.4, Problem 11BSC is Solved
Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

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Answer: Usual and Unusual Values. In Exercises, consider a

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