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# Interval Estimation & Margin of Error

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# 1. use the sample data and confidence level to construct the confidence interval estimate of the population proportion p.

n= 550, x= 440, 95% confidence

< p <

#2 use the given confidence level and sample data to find (a) the margin of error and (b) the confidence interval for the population mean m. assume that the population has a normal distribution .

Weight lost on a diet 99% confidence ; n = 61 xbar= 4.0kg, s= 5.8 kg

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1. Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p.

n= 550, x= 440, 95% confidence

< p <