Solution Found!
Answer: Constructing and Interpreting Confidence
Chapter 7, Problem 15BSC(choose chapter or problem)
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.
Questions & Answers
QUESTION:
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.
ANSWER:Answer
Step 1 of 4
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