SOLUTION: Express the confidence interval 0.444 < p < 0.888 in the form p̂±E. p̂±E = __ ± _

SOLUTION: Express the confidence interval 0.444 < p < 0.888 in the form p̂±E. p̂±E = ±

Question 1182733: Express the confidence interval 0.444 < p < 0.888 in the form p̂±E.
p̂±E = __ ± __
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!

A confidence interval always has p̂ in the exact middle of the interval.

To find the middle, average the lower and upper bounds, 0.444 and 0.888:



So p̂ = 0.666

The value of E is the difference in absolute value between p̂ and either
bound. 

E = |0.888-0.666| = |0.444-0.666| = 0.222

so 

p̂±E = 0.666 ± 0.222

Edwin

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SOLUTION: Express the confidence interval 0.444 < p < 0.888 in the form p̂±E. p̂±E = __ ± __

SOLUTION: Express the confidence interval 0.444 < p < 0.888 in the form p̂±E. p̂±E = ±