I need help with a statistics problem

Statistics
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A sample of 25 adult elephants had an average weight of 9,500 pounds, with a sample standard deviation of 150 pounds. Find the 99% confidence interval of the true mean. Assume that the variable is normally distributed.

Nov 6th, 2015

Thank you for the opportunity to help you with your question!

Given the mean weight ,m=9500

Critical value for the 99% confidence interval is z= 2.58.

We have the standard deviation ,d=150

So the formula for the confidence interval is


Lower limit is 9416

Upper limit =9584

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Nov 6th, 2015

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Nov 6th, 2015
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Nov 6th, 2015
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