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Formulas and Calculator Options Exam IV

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Professor Shad 1342 Formulae and Calculator Options for Exam 4 CI: Point Estimate (x) ± Error (E) Point estimate (x) = Margin of error (E) = • !" $ %" Point estimate is the midpoint of the interval & %" ' !" Lower bound + E = Point of estimate & Confidence Intervals for Proportion and Mean are of the form: + (𝟏' 𝒑 +) 𝒑 + (𝟏' 𝒑 +) 𝒑 𝒏 𝒏 Population Proportion: .𝑝̂ − 𝑍(/& 34 5, 𝑝̂ + 𝑍(/& 34 𝐒 𝐒 √𝐧 √𝐧 58 = – 𝒕𝜶/𝟐 4 5 , 𝒙 = + 𝒕𝜶/𝟐 4 5@ Population Mean: ;𝒙 • Critical Values for Confidence Int ...
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