Please help me in figuring out how to solve the following.

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Critical t= TINV(0.10,n-1)=TINV(0.10,15-1) =1.761 90% CI=... View the full answer

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x̄= 18.5 sigma= 4.2 n= 15 df=15-1=14 alpha=0.1 then T(alpha/2)=1.761310 Margin of error... View the full answer