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You are given the sample mean and the population standard deviation. Use this information to construct the90% and95% confidence intervals for the population mean. What

You are given the sample mean and the population standard deviation. Use this information to construct the90% and95% confidence intervals for the population mean. What interval iswider? A random sample of 36 gas grills has a mean price of $643.40 Assume the population standard deviation is $58.40

90% =

95% =

wider?

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