Calculate the margin of error of a confidence interval for the difference between two population means using the given information. Round your answer to 3 decimal places. ?1 = 14.11, ?1 = 78, ?2 = 10.84, ?2 = 91, ? = 0.8
We have given,
For Sample 1
Population standard deviation=14.11
Sample size=78
For sample 2
Population standard deviation= 10.84
Sample size=91
Level of significance =1-0.80=0.2
Z critical value(by using Z table) = 1.282
Margin of error
=2.513
Calculate the margin of error of a confidence interval for the difference between two population means...
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