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# Solution: Constructing and Interpreting Confidence

## Problem 16BSC Chapter 7.2

Elementary Statistics | 12th Edition

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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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Solution 16BSC

The point estimate of the population proportion is =0.540. The required value is E = 0.020. The...
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