Question

# Calculate the margin of error of a confidence interval for the difference between two population means...

Calculate the margin of error of a confidence interval for the difference between two population means using the given information. Round your answer to six decimal places.

σ1=13.94, n1=117, σ2=10.65, n2=137, c=0.9

We have given,

Level of significance =1-0.90=0.1
Z critical value(by using Z table) = 1.645

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