可以幫忙看答案是否有誤嗎？謝謝

u. WUP 3. Tablet PCs: Cost, CPU, and Operating System. Refer to Table 1.6. ratio a. What is the average cost for the tablets? 587.9 b. Compare the average cost of tablets with a Windows operating system to the (負銀系) average cost of tablets with an Android operating system. Windows : 133.2, Android: 438.5 c. What percentage of tablets use a CPU manufactured by TI OMAP? 70% d. What percentage of tablets use an Android operating system? 40%

想請問26題如何做，謝謝

- Ym)-1 YmYm-1...7271. = -1 = 20. Show that (1 2) is not a produ 21. (a) If 7. 12....m are transpositions, show that ( (b) Show that o and 0-1 have the same parity for all o in Sn. (c) Show that o and Tot-1 have the same parity for all o and T in Sn: 33. Show that Antun Sn = A, for all n 2 3 (regard Sm C Sn+1 in the usual way). 23. Leto € Sm, o te. If n 23, show that y € Sn exists such that or + yo. (Hint: If ok=1 with k #1, choose m€ {k,1; and take y = (k m).] 24. If o E Sn, show that o2 = e if and only if o is a product of disjoint transpositions. 25. If n23, show that every even permutation in Sn is a product of 3-cycles. 26. Let y be any cycle of length r. If o e Sn, show that oyo-1 is also a cycle of length r. More precisely, if y = (kı k2 okr). kr) show that oyo-1 = (oki ok2 27. (a) Show that (kı kz ... kr) = (ki kr) (kı kr-1)... (kı k2). k2 = (- (b) Show that each o ESn is a product of the transpositions (1 2), (1 3),...,(1 n). (Hint: Each transposition is such a product by (a) and Exercise 26.] (c) Repeat (b) for the transpositions (1 2), (2 3),..., (n-1 n). (Hint: Use (a) and Exercise 26.) (d) If o= (1 2 3 n), show that each element of Sn is a product of the permutations (1 2), o, and 0-1. (Hint: Use (b) and Exercise 26.] 28. Let o = (1 2 3 ... n) be a cycle of length n > 2. (a) If n = 2k, find the factorization of o2 into disjoint cycles. 9 =

想請問104、105、106題該怎麼算？

00 掌資料 260 以上(8 100 104. (B)某人為研究家庭人口數與家庭每日支出的關係,蒐集了10 筆家庭資料,但是他並 不清楚應如何進行迴歸分析以說明人口數如何影響支出,因此他只提供了以下的敘 述統計結果: 21 樣本數 樣本平均數 樣本變異數 79 ),請問依據上表 血管疾病的病人 家庭人口數 10 4.10 3.43 10 1410.00 203400.00 0.722 三之結果?(10 日支出金額(台幣) 人口數與日支出金額之樣本共變異數(Sample covariance)為710.01。 請問以最小平方法配適之線性迴歸方程式:(日支出金額)=A+Bx(家庭人口數), 其中B之估計值應約為以下何值?(100 初考) SSR- (SS xy” ß 55 x 95 x (A) 343.90 (B) 207.00 (C) 320.49 (D)275.32 105. (A)承上題,以下何者最接近本分析之判定係數(Coefficient of determination,R?)? (100 初考)(A) (B (B) 0.851 (C) 0.647 (D) 0.682 106. (C)承上題,請問檢定人口數是否對家庭日支出有顯著之解釋能力時,其可能的檢定統 計量及結果如下列選項,請選出最適當者: (100 初考) (A) F檢定統計量值約為16.49,a=0.05 的水準下為顯著 (B) F檢定統計量值約為20.83,在未提供分配表格之情況下無法判斷在 a=0.05 的 水準下是否為顯著 (C) T檢定統計量值約為4.56,Q=0.05 的水準下為顯著 (D) T檢定統計量值約為4.06,在未提供分配表格之情況下無法判斷在 a=0.05 的 水準下是否為顯著 on) 公析,而

有人能幫幫忙大學統計嗎 因為遠距教學所以老師多出了這個題目 但著實不太會做 好像會用到excel choose your own parameters and do the below simulation. Simulate the central limit the... 繼續閱讀

不會呀 救救我help

9 间 標題1 標題2 標國 1 段落 樣式 所有答案一率計算至小數第一位! 1. 嘉榮大學學生餐廳的自助餐供應红烧排骨,其原本之食物成本卡(100 人份)如下:(30%) 红烧排骨之標準食譜(100人份) 調整前已 調整後。 品名 單價 数量 單價 總價 Kge (元/Kg (G/) Kg (元/Kg) 排骨 66 $ $80.004 $480 $80.006 白疏 44 $30.00 $120 $30.006 红蘿萄 2 $15.00€ $30 $15.004 乾燥香菇 $5004 主材料總價 $457.004 調味料&香辛料(10%) $45.75 總材料成本。 $502.74 每份初估成本。 $5.034 切割&烹调耗損率10% 0.50 每份實際成本。 $5.534 食物成本% 40% % 每份红烧排骨售價 $144 4 近日老闆決定再加些香菇,增加風味。請依據以下說明,重新擬定一份红烧排骨成本卡,並核 算新的售價。 乾燥香菇($500kg,膨胀率 300%,切割&烹調耗損率5%),以每人分配 12g (熟品重)。 新式红烧排骨預估將增加20%的點餐數,請將食譜的调整安全係數納入計算。 該自助餐的營運管理費佔新式红烧排骨售價之45%,利潤佔20%。 26°C 0 目 SAMSUNG F12 F10 F11 F9 Ins. PE FT Lock F4 F8 F5 F7 F6 -$ lo % A & * 00 4 5 6 7 0 R Y Y P T

看不懂表格的數據 有人可以詳細解釋嗎？

其次作雙變項分析,由表四觀察,可知各自變 項與良好飲食行為的相關均為中等至稍弱,最強的 相關為情境自我效能(r=.36 ),其次為自覺障礙 性(r = -25 ),自覺利益性(r.19)與自覺罹患性 =.16)則稍弱而數值較接近,自覺嚴重性及個人自 我效能則沒有顯著相關。 研究者將各自變項放入複迴歸模式中,結果如 表五。達到顯著意義的預測變項為性別(B=.50)、 情境自我效能(B=.42)、自覺障礙性(B=.19)、自 覺利益性(B=.13),自覺罹患性(B-09),整體模 50 黃連具 纸元青 式可解釋的變異量達18%。較值得注意的是:自覺 罹患性對飲食行為的影響係負號,即愈覺得不可能 罹患疾病者,飲食行為愈佳,這是和健康信念模式 所預測的方向相反的。健康信念模式的變項和飲食 行為的相關,在控制社會人口學變項後,也仍然存 在。 表五 各變項對飲食行為之複迴歸係數及解釋變異 量n=451 迴歸係數(6) 標準誤 T值 顯著水準, 自從罹患性 -.09 204 .04 自覺嚴重性 .01 .06 .03 n..s. 自覺障礙性 -.19 .07 .01 自覺利益性 .13 .41 .00 個人自我效能 .04 .04 1.03 n.s. 情境自我效能 .42 .06 6.77 健康狀況 .12 .23 .50 n.s. 年級 .03 .23 .03 n.s. 性別(d) .50 .46 .13 家庭社經地位 .19 .16 1.19 n.s. R-square 車車事 表四 飲食行為與社會心理學變項相關情形 n=451 自觉耀自覺嚴自障自覺利個人自情境自 患性重性礙 性益性我效能我效能 飲食行為 - 16中車 - 25** .19** .09 .36*** **p<.05 ***p<.001 .04 .18 d-dummy variable ES: l-0-3 *p<.05. **p<.01 ***p<.001

求救 統計 #8 （可支薪）

8. The NBI data were analyzed and the results made available at the FHWA Web site. Using the FHWA inspection ratings, each of the 608,272 highway bridges in the US was categorized as structural deficient, functionally obsolete, or safe. About 13.5% of the bridges were found to be structural deficient, while 3.5% were functionally obsolete. a. What is the variable of interest to the researchers? b. Is the variable of part a quantitative or qualitative? c. Is the data set analyzed a population or a sample? Explain. d. How did the NBI obtain the data for the study?

急 求救統計 #6 （可支薪）

6.The National Science Foundation (NSF) sponsored a study on girls participation in informal science, technology, engineering, or mathematics (STEM) programs. The results of the study were published in Cascading Influences: Long-Term Impacts of Informal STEM Experiences for Girls (March 2013). The researchers sampled 174 young women who recently participated in a STEM program. They used a pie chart to describe the geographic location (urban, suburban, or rural) of the STEM programs attended. Of the 174 participants, 107 were in urban areas, 57 in suburban areas, and 10 in rural areas. a. Determine the proportion of STEM participants from urban areas. b.Determine the proportion of STEM participants from suburban areas. c.Determine the proportion of STEM participants from rural areas. d. Multiply each proportion in parts a-c by 360 to determine the pie slice size (in degrees) for each location. e.Use the results, part d, to construct a pie chart for geographic location of STEM participants. f.Interpret the pie slice for urban areas. g.Convert the pie chart into a bar graph. Which, in your opinion, is more informative?

急！求救 #6 8 9 如果需要酬勞可私下談 （ex.$70題）

pie participation in informal 6.The National Science Foundation (NSF) sponsored a study on girls' science, technology, engineering, or mathematics (STEM) programs. The results of the study were published in Cascading Influences: Long-Term Impacts of Informal STEM Experiences for Girls (March 2013). The researchers sampled 174 young women who recently participated in a STEM program. They used a pie chart to describe the geographic location (urban, suburban, or rural) of the STEM programs attended. Of the 174 participants, 107 were in urban areas, 57 in suburban areas, and 10 in rural areas. a.Determine the proportion of STEM participants from urban areas. b.Determine the proportion of STEM participants from suburban areas. c.Determine the proportion of STEM participants from rural areas. d. Multiply each proportion in parts a-c by 360 to determine the pie slice size (in degrees) for each location. e.Use the results, part d, to construct a pie chart for geographic location of STEM participants. f.Interpret the pie slice for urban areas. g.Convert the pie chart into a bar graph. Which, in your opinion, is more informative? 7. All high way bridges in the US are inspected periodically for structural deficiency by the FHWA. Data from the FHWA inspections are compiled into the National Bridge Inventory (NBI). Classify each variable below as quantitative or qualitative. a. Length of maximum span (feet). b. Number of vehicle lanes. c. Toll bridge (yes or no). d. Average daily traffic. e. Condition of deck (good, fair, or poor). f. Bypass or detour length (miles). g. Route type (interstate, U.S., state, county, or city) 8. The NBI data were analyzed and the results made available at the FHWA Web site. Using the FHWA inspection ratings, each of the 608,272 highway bridges in the US was categorized as structural deficient, functionally obsolete, or safe. About 13.5% of the bridges were found to be structural deficient, while 3.5% were functionally obsolete. a. What is the variable of interest to the researchers? b. Is the variable of part a quantitative or qualitative? c. Is the data set analyzed a population or a sample? Explain. d. How did the NBI obtain the data for the study?

請問這題這樣寫正確嗎~

19. Length of Calls to the IRS. According to the IRS, taxpayers calling the IRS in 2017 waited 13 minutes on average for an IRS telephone assister to answer. Do callers who use the IRS help line early in the day have a shorter wait? Suppose a sample of 50 callers who placed their calls to the IRS in the first 30 minutes that the line is open during the day have a mean waiting time of 11 minutes before an IRS telephone assister answers. Based on data from past years, you decide that it is reasonable to assume that the standard deviation of waiting times is 8 minutes. Using these sample results, can you conclude that the waiting time for calls placed during the first 30 minutes the IRS help line is open each day is significantly less that the overall mean waiting time of 13 minutes? Use a = .05.