Maximum error in confidence interval A sample of 40

Eduardo Mclaughlin

Eduardo Mclaughlin

Answered question

2022-04-13

Maximum error in confidence interval
A sample of 40 cows is drawn to estimate the mean weight of a large herd of cattle. If the standard deviation of the sample is 96 kg, what is the maximum error in a 90% confidence interval estimate?

Answer & Explanation

Nico Buck

Nico Buck

Beginner2022-04-14Added 9 answers

You use t-distribution since you have sample standard deviation s=96, and with n=40,α=0.1,df=39,tα2? ( can you look it up the table A-3 in Triola book ? ) . Thus E=tα2sn is your formula.

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