If n=22, ¯ x x ¯ (x-bar)=35, and s=6, find the margin of error at a 99% confidence level (use at least three decimal places)

Question

If n=22,   ¯ x x ¯   (x-bar)=35, and s=6, find the margin of error at a 99% confidence level (use at least three decimal places)

Jon S. · Accepted Answer

margin of error = t-critical * standard deviation/square root sample size

t-critical for 21 DOF and tail alpha = 0.005 = 2.831

standard deviation given as 6

sample size given as 22.

plug in those numbers in the margin of error equation.

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