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August 4, 2015

Homework Help: Stats

Posted by sam on Saturday, April 21, 2012 at 6:02pm.

A random sample of n=500 households in a certain metropolitan area revealed that 150 have combined cable, phone and internet service.
a.Calculate p-hat, the sample proportion of households having such service.
b.Calculate a confidence interval for π, the proportion of all households in this area that have such service; use a confidence level of 90%.

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