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Get Full Access to Elementary Statistics - 12 Edition - Chapter 4.2 - Problem 30bsc
Get Full Access to Elementary Statistics - 12 Edition - Chapter 4.2 - Problem 30bsc

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Using Probability to Identify Unlikely Events. In

ISBN: 9780321836960 18

Solution for problem 30BSC Chapter 4.2

Elementary Statistics | 12th Edition

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Problem 30BSC

Problem 30BSC

Using Probability to Identify Unlikely Events. In Exercises, consider an event to be “unlikely” if its probability is less than or equal to 0.05. (This is equivalent to the same criterion commonly used in inferential statistics, but the value of 0.05 is not absolutely rigid, and other values such as 0.01 are sometimes used instead.)

Credit Card Purchases In a survey, 169 respondents say that they never use a credit card, 1227 say that they use it sometimes, and 2834 say that they use it frequently. What is the probability that a randomly selected person uses a credit card frequently? Is it unlikely for someone to use a credit card frequently? How are all of these results affected by the fact that the responses were obtained by those who decided to respond to the survey posted on the Internet by America OnLine?

Step-by-Step Solution:
Step 1 of 3

Solution 30BSC

1. The probability that a randomly selected person uses a credit card frequently 0.670.
2. No, it is not unlikely that a randomly selected person uses a credit card frequently because the probability that a randomly selected person uses a credit card frequently is 0.670 which is greater than 0.05.
3. Since the survey did not select the participants randomly so results may not correct.

Step 2 of 3

Step 3 of 3

ISBN: 9780321836960

The answer to “Using Probability to Identify Unlikely Events. In Exercises, consider an event to be “unlikely” if its probability is less than or equal to 0.05. (This is equivalent to the same criterion commonly used in inferential statistics, but the value of 0.05 is not absolutely rigid, and other values such as 0.01 are sometimes used instead.)Credit Card Purchases In a survey, 169 respondents say that they never use a credit card, 1227 say that they use it sometimes, and 2834 say that they use it frequently. What is the probability that a randomly selected person uses a credit card frequently? Is it unlikely for someone to use a credit card frequently? How are all of these results affected by the fact that the responses were obtained by those who decided to respond to the survey posted on the Internet by America OnLine?” is broken down into a number of easy to follow steps, and 141 words. Since the solution to 30BSC from 4.2 chapter was answered, more than 444 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 30BSC from chapter: 4.2 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. This full solution covers the following key subjects: Card, Credit, use, unlikely, Probability. This expansive textbook survival guide covers 121 chapters, and 3629 solutions.

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