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Find the margin of error and the 90 % confidence interval for the following n1 =...

Find the margin of error and the 90 % confidence interval for the following

n1 = 11;                        σ1 = 10                    x̅1= 105                               

n2 = 12;                        σ2 = 20                    x̅2= 90

Math   Statistics-And-Probability   
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