If n=29, ¯ x (x-bar)=47, and s=4, find the margin of error at a 98% confidence level

Question

If n=29, ¯x�¯(x-bar)=47, and s=4, find the margin of error at a 98% confidence level

Answer 1

The formula for the margin of error is:

Margin of Error = Aσ * _{√ σ}²_/n

In your problem α=0.02, because you're asked to calculate it at the 98% confidence level,σ=4, and n=29.

Simply plug in your numbers, find the correct table value, and solve the equation!