83 某人類學家想探討飲食習慣對人類體型的影響。二次世界大戰前的研究數據顯示:日本成年男性的平均身高為64.0英吋,標準差為2.0英吋;該人類學家在一個最近的研究中隨機選擇了25名日本成年男性,發現此樣本之平均身高為66.5英吋,標準差為3.0英吋。假設目前日本成年男性的身高為μ,而μ的95%信賴區間=(X,Y),其中X = 66.5 - t × SE,請計算SE =?
2.0 3.0 2.0/5 3.0/5
ANS D
SE = SD/√n
THIS IN THIS QUESTION:
SE = 3/ √25
SE = 3/5
The standard error of a method of measurement or estimation is the standard deviation of thesampling distribution associated with the estimation method.[1] The term may also be used to refer to an estimate of that standard deviation, derived from a particular sample used to compute the estimate.
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