[問題] [問題]經建行政統計學概要
請問經建行政統計學概要第二題可以用雙尾檢定嗎?公職王答案是用單尾的。題目如下:
某品牌手機廣告宣稱其手機的待機時間平均為10天,及變異數4天左右。若消基會從中抽出64枝,以便檢驗該廣告公司是否真實?
(一)請建立假設檢定
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