阿摩線上測驗 登入

最新科目

最新試卷

115年 - 115 臺北自來水事業處及所屬工程總隊_新進職員(工)甄試試題_職員—助理工程師【機電工程】:電工原理#144713(50題)

115年 - 115 臺北自來水事業處及所屬工程總隊_新進職員(工)甄試試題_職員—四級工程師:土木工程#144705(40題)

115年 - 115 臺北自來水事業處及所屬工程總隊_新進職員(工)甄試試題_職員—四級工程師/助理工程師/助理管理師_共同科目:英文#144704(15題)

115年 - 115 臺北自來水事業處及所屬工程總隊_新進職員(工)甄試試題_職員—助理工程師【機電工程】:基本電學#144703(50題)

115年 - 115 國立台北教育大學師資培育處_各類料教育學程暨小學雙語模組甄選複審試題:國語文#144702(35題)

115年 - 115 國立台北教育大學師資培育處_各類料教育學程暨小學雙語模組甄選複審試題:教育心理學#144701(2題)

115年 - 115 臺北自來水事業處及所屬工程總隊_新進職員(工)甄試試題_職員—四級工程師/助理工程師/助理管理師_共同科目:自來水法規#144700(15題)

115年 - 115 臺北自來水事業處及所屬工程總隊_新進職員(工)甄試試題_職員—四級工程師/助理工程師/助理管理師_共同科目:國文(作文)#144699(1題)

115年 - 115 臺北自來水事業處及所屬工程總隊_新進職員(工)甄試試題_職員—四級工程師:自來水工程#144698(50題)

115年 - 115 台灣自來水股份有限公司_評價職位人員甄試試題_技術士化驗類:高中(職)分析化學及水質檢驗操作須知#144692(50題)

最新試題

10. An estimator that has small variance (but may be biased) is called precise. An estimator that has small MSE (Mean squared error) is called accurate. To illustrate: A standard 100-gm mass was weighted many, many times, on scale A. Similarly, on scale B, and finally on scale C. The distribution of measurements is summarized below Scale A: $\mu=100.08, \sigma=0.01$ Scale B: $\mu= 99.98, \sigma=0.02$ Scale C: $\mu=100.00, \sigma=0.05$ Which scale is most precise? Which scale is most accurate? (A) B is most precise, A is most accurate (B) A is most precise, B is most accurate (C) A is most precise and is also most accurate (D) B is most precise and is also most accurate e. Since the population mean is not given, there is no answer to this question. I

9. When the following hypotheses are being tested at a level of significance of a $H_5: \mu \ge 500$ $H_6: \mu < 500$ the null hypothesis will be rejected, if the p-value is (A) \( \leq a \) (B) \( >a \) (C) \( = a / 2 \) (D) \( \leq 1 - a / 2 \)

8. The owner of a local nightclub has recently surveyed a random sample of n = 300 customers of the club. She would now like to determine whether or not the mean age of her customers is over 35. If so, she plans to alter the entertainment to appeal to an older crowd. If not, no entertainment changes will be made. The appropriate hypotheses to test are: (A) \( H_{5}:\mu \geq 35 \) vs. \( H_{6}:\mu < 35 \) (B) \( H_{5}:\mu \leq 35 \) vs. \( H_{6}:\mu >35 \) (C) \( H_{5}:\overline{\mathbf{X}}\geq 35 \) vs. \( H_{6}:\overline{\mathbf{X}} < 35 \) (D) \( H_{5}:\overline{\mathbf{X}}\leq 35 \) vs. \( H_{6}:\overline{\mathbf{X}} >35 \)

最新申論題

最新課程

最新主題筆記

最新討論