Answer: Constructing and Interpreting Confidence

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

ISBN: 9780321836960 18

Solution for problem 15BSC Chapter 7.2

Elementary Statistics | 12th Edition

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Problem 15BSC

Constructing and Interpreting Confidence Intervals. In Exercises use the given sample data and confidence level. In each case, (a) find the best point estimate of the population proportion p; (b) identify the value of the margin of error E; (c) construct the confidence interval; (d) write a statement that correctly interprets the confidence interval.

From a Prince Market Research poll in which respondents were asked if they acted to annoy a bad driver: n = 2518, x = 1083 who said that they honked. Use a 90% confidence level.

Step-by-Step Solution:

Answer

Step 1 of 4</p>

Given x=1083 , n=2518

a)The best point estimate of the population proportion p=x/n

=1083/2518

=0.43

q=1-p

=1-0.43

=0.57

Step 2 of 4</p>

b)The margin of error E at 90% C.L=1.645 $\sqrt{\frac{pq}{n}}$

=1.645 $\sqrt{\frac{0.43(0.57)}{2518}}$

=1.645(0.0098)

=0.016

Step 3 of 4

Chapter 7.2, Problem 15BSC is Solved

Step 4 of 4

Textbook: Elementary Statistics

Edition: 12

Author: Mario F. Triola

ISBN: 9780321836960

The full step-by-step solution to problem: 15BSC from chapter: 7.2 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. The answer to “Constructing and Interpreting Confidence Intervals. In Exercises use the given sample data and confidence level. In each case, (a) find the best point estimate of the population proportion p; (b) identify the value of the margin of error E; (c) construct the confidence interval; (d) write a statement that correctly interprets the confidence interval.From a Prince Market Research poll in which respondents were asked if they acted to annoy a bad driver: n = 2518, x = 1083 who said that they honked. Use a 90% confidence level.” is broken down into a number of easy to follow steps, and 88 words. This full solution covers the following key subjects: confidence, level, use, interval, Interpreting. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. Since the solution to 15BSC from 7.2 chapter was answered, more than 792 students have viewed the full step-by-step answer.