Question 1057250: When 1460 subjects were asked, "On how many days in the past 7 days have you felt lonely?" the mean was 1.6. and the standard deviation was 2.25. The margin of error for a 95% confidence interval for the population mean is 0.12 Construct that confidence interval, and interpret it.
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Answer by rothauserc(4718)   (Show Source):
You can put this solution on YOUR website! confidence interval(CI) = sample statistic + or - Margin of Error
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CI = 1.6 + or - 0.12 = ( 1.48, 1.72 )
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If we use the same sampling method to select different samples and compute a 95% interval estimates for each sample, then some of those intervals would include the population mean and some would not.
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A 95% confidence level means that we would expect 95% of the interval estimates to include the population mean.
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