Solved: Finding ?, ?, and Unusual Values. In Exercises,

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

ISBN: 9780321836960 18

Solution for problem 7BSC Chapter 5.4

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition

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Problem 7BSC

Finding μ, σ, and Unusual Values. In Exercises, assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean μ and standard deviation σ . Also, use the range ruh of thumb to find the minimum usual value μ – 2σ and the maximum usual value μ – 2 σ.

Identity Theft In a Gallup poll of 1013 randomly selected adults, 66% said that they worry about identity theft, so n = 1013 and p = 0.66.

Step-by-Step Solution:

Answer:

Step 1 of 1

Given, n = 1013 and p = 0.66, q = 1 - p = 0.34

Binomial distribution with n trials and the probability of success for one trial is p.

Using the given values of n and p to find the mean μ and standard deviation σ

Mean μ = np = 1013 $\times{}$ 0.66 = 668.58

Standard deviation σ = $\sqrt{npq}$ = $\sqrt{1013\times{}0.66\times{}0.34}\$ = 15.077

Using the range rule of thumb to find the minimum usual value μ – 2σ and the maximum usual value μ – 2σ.

We find the minimum and maximum usual values according to the equations you gave

minimum: mean - 2(standard deviation)

= 668.58 - 2(15.077)

= 638.426

maximum: mean + 2(standard deviation)

= 668.58 + 2(15.077)

= 698.734

Step 2 of 1

Chapter 5.4, Problem 7BSC is Solved

Textbook: Elementary Statistics

Edition: 12

Author: Mario F. Triola

ISBN: 9780321836960

Since the solution to 7BSC from 5.4 chapter was answered, more than 374 students have viewed the full step-by-step answer. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. This full solution covers the following key subjects: Find, values, usual, use, theft. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. The answer to “Finding ?, ?, and Unusual Values. In Exercises, assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean ? and standard deviation ? . Also, use the range ruh of thumb to find the minimum usual value ? – 2? and the maximum usual value ? – 2 ?.Identity Theft In a Gallup poll of 1013 randomly selected adults, 66% said that they worry about identity theft, so n = 1013 and p = 0.66.” is broken down into a number of easy to follow steps, and 98 words. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. The full step-by-step solution to problem: 7BSC from chapter: 5.4 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM.