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Finding Binomial Probabilities In Exercise, | Ch 4.2 - 20E

Elementary Statistics: Picturing the World | 6th Edition | ISBN: 9780321911216 | Authors: Ron Larson; Betsy Farber ISBN: 9780321911216 66

Solution for problem 20E Chapter 4.2

Elementary Statistics: Picturing the World | 6th Edition

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Elementary Statistics: Picturing the World | 6th Edition | ISBN: 9780321911216 | Authors: Ron Larson; Betsy Farber

Elementary Statistics: Picturing the World | 6th Edition

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Problem 20E

Problem 20E

Finding Binomial Probabilities In Exercise, find the indicated probabilities. If convenient, use technology or Table 2 in Appendix B to find the probabilities.

Safety Recall Sixty-eight percent of adults would still consider a car brand despite product/safety recalls. You randomly select 20 adults. Find the probability that the number of adults who would still consider a car brand despite product/safety recalls is (a) exactly one, (b) more than one, and (c) at most one.

 

Step-by-Step Solution:

Solution:

Step 1 of 4:

   

        From the given problem, we have

     

           n = 20, p = 68%

                          = 0.68

     The pmf of a Binomial distribution is

    P(X = x) = ;   x = 0, 1, 2,...., n.

 Here, we have to find the probability that the number of adults who would still consider a car brand despite product/safety recalls is

Step 2 of 4

Chapter 4.2, Problem 20E is Solved
Step 3 of 4

Textbook: Elementary Statistics: Picturing the World
Edition: 6
Author: Ron Larson; Betsy Farber
ISBN: 9780321911216

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Finding Binomial Probabilities In Exercise, | Ch 4.2 - 20E