Confidence interval for the population mean length


Two hundred fish caught in Cayuga Lake had the mean length of 13.9 inches. The population standard deviation is 3.6 inches. (Provide your answer correct to two decimal places.)

(a) Determine the 90% confidence interval for the population mean length.

Lower Limit

Upper Limit

(b) Determine the 98% confidence interval for the population mean length.

Lower Limit

Upper Limit

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Basic Statistics: Confidence interval for the population mean length
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