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Get Full Access to Elementary Statistics - 12 Edition - Chapter 7.2 - Problem 16bsc
Get Full Access to Elementary Statistics - 12 Edition - Chapter 7.2 - Problem 16bsc

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# Solution: Constructing and Interpreting Confidence

ISBN: 9780321836960 18

## Solution for problem 16BSC Chapter 7.2

Elementary Statistics | 12th Edition

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Problem 16BSC

Problem 16BSC

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 an Angus Reid Public Opinion poll in which respondents were asked if they felt that U.S. nuclear weapons made them feel safer: n = 1005, x = 543 who said “yes.” Use a confidence level of 80%.

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Step 1 of 3

Solution 16BSC

1.  The point estimate of the population proportion is =0.540.
2.  The required value is E = 0.020.
3.  The 80% confidence interval for the population proportion p is 0.520<p<0.560
4. From the above confidence interval we can say that, we are 80% confident that the estimated population proportion will be lie between 0.520 and 0.560.
Step 2 of 3

Step 3 of 3

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