問題詳情
師大附中高二數學競試,抽取其中的 20 位同學計算數學成績的算術平均數為 41 分,樣本標準差為 3 分,但若甲生違背考場規定,其成績由 30 分改為 0 分;乙生與丙生各有一題閱錯,其成績分別由 10 分、25 分更正為 15 分、30分,試求更正後 20 位同學數學成績的
(1)算術平均數為何?(3 分)
(1)算術平均數為何?(3 分)
參考答案
答案:C
難度:非常簡單0.93299
統計:A(3),B(5),C(362),D(3),E(0)
內容推薦
- means coating of ice on an object, e.g. the mast or superstructure of a vessel.(A)Cooling(B)Pain
- is an U-shaped link closed with a pin used for connecting purposes.(A)Cable(B)Chain(C)Shackle(D)
- 【題組】(b)23461 is divided by 43
- The fuel tank of No.1 lifeboat is not full. Please fill fuel as soon as possible.(A)up(B)with(C)i
- 36將 化簡後,與下列哪一個式子相等?(A) x+y (B) x-y (C) (D)
- 【題組】b.A $10-per-month tax on apartment rentals
- 【題組】(4) 若甲生高三下的國文學期成績為75分,試利用適當的迴歸直線猜測甲生高三下的英文成績為何_____(Q)______(四捨五入至整數)
- 一、試說明秦漢時期中國北方草原游牧民族的生活方式與軍政特色爲何?並舉『匈奴』爲例,論述草原游牧民族與南方農業民族的互 關係。25%
- 【題組】承上,若今年1月7日日地月的關係如上述的丙圖狀態,且臺中港的潮汐與農曆推算時間都相吻合。小伯和小嘉 邀班上同學於結業式後隔天(1月21日)再前往高美溼地進行海岸環境的野外考察,而若要得到
- 【題組】(3) Y 對 X 的迴歸直線為_____(P)_____
內容推薦
- When you enter the lifeboat, you must sit down immediately and to your seat.(A)hold up(B)hold off
- Let G be a group such that | G | < 200. Suppose G has subgroups of order 33 and55, find the order
- 試求函數 的值域___________________。
- 【題組】(2)樣本標準差爲√a分,則a値爲何?(5分)(a以四捨五入法取至整數) (樣本標準差)
- When a ship has a comparatively large GM, for example 2m to 3m, the righting moments atsmall angl
- All crew members keep calm. There is no to panic. We have enough life-savingappliances for everyo
- The following signals are distress signals except:(A)Flames on the vessel.(B)Basket hanging in th
- Please refer to the chart as attached and answer to the following two questions:The symbol at Q4
- If H is a subset of a group G,show that H is a subgroup of G if and only if H is nonempty and ab-1
- PAN PAN means to announce a(n) message.(A)alarming(B)distress(C)urgency(D)warning
- Instruct all crew members that participation in training sessions on occupational safety is .(A)m
- 34將16等八個數填入右圖10個圓圈中,其中三個頂點(灰色圓圈)填入相同的數X,7個白色圓圈分別填入其餘七數(圈圈不同數字),則X=____
- 面積比= (5) 。
- A new and better electronic mousetrap is produced under complete patent control by a single manufa
- 【題組】不能「稱」前時之聞
- These phrases are not intended to or contradict the International Regulations forPreventing Colli
- 【題組】2013年,城镇私营单位就业人员年平均工资与2012年相比,增长最慢的区域是。 (A)珠三角 (B)山区 (C)东翼 (D)西翼
- △ABC中,sinA== (H) 。
- 下面是世說新語的其中二則,閱讀後,請選出「 」應填的答案: 篇(A)容止(莊嚴的儀容與舉止) (B)儉嗇 (節儉吝嗇) (C)假譎(假意行權) (D)棲逸(棲止隱逸於山林)。
- “MUSTER LIST” is used for .(A)boat drill or distress(B)contract of employment(C)crewmember monthl
- Polluter means a vessel harmful substances into the air or spilling oil into the sea.(A)spilling(
- 【題組】2012年,我省城镇私营单位就业人员年平均工资最高的区域约为最低区域的()倍。 (A) (B) (C) (D)0
- 李小姐為了使自己看起來更青春活潑、有朝氣,她選擇色相的「對比性和諧」搭配衣服的色彩,以下各組是「上衣/裙子」的顏色,哪一組符合她的選擇?(A) 青/青紫 (B) 黃/青紫 (C) 綠/青綠 (D
- 【題組】「」了酒
- means the height from the waterline to the highest point of the vessel.(A)Air draught(B)Air heig