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QUESTION
(1 point) A confidence interval for a population mean has a margin of error of 3. a) Determine the length of the confidence interval. b) If the...
A confidence interval for a population mean has a margin of error of 3.2.
a) Determine the length of the confidence interval.
b) If the sample mean is 56.7, obtain the confidence interval.
Confidence interval: ( , ).
(1 point) A confidence interval for a population mean has a margin of error of 3.2.a) Determine the length of the confidence interval.b) If the sample mean is 56.7, obtain the confidence interval.Confidence interval: ().