想問這題要怎麼算🙇‍♀️

37. Consider a sample with a mean of 30 and a standard deviation of 5. Use Chebyshev's theorem to determine the percentage of the data within each of the ranges which follow. LO 5 a. 20 to 40 b. 15 to 45 c. 22 to 38 d. 18 to 42 e. 12 to 48

想請問這題怎麼解

For the following cases, identify which distribution, z or t, should be used in calculating the statistical intervals of population mean (u). If the confidence interval could not be estimated under the given conditions, just put an "X". (a). (3%) Population is not normally distributed and its variance is given, sample size n = 22. Ans:( ) (c). (3%) Population is normally distributed and its variance is given, sample size n = 11. Ans:( ) (b). (3%) Population is a uniform distribution and its variance is (d). (3%) Population is normally distributed and its variance is unknown, sample size n = 13. Ans:( ) unkown, sample size n = 18. Ans:( )

不知道怎麼用顯著性水平來進行檢驗

1. A sample of 100 students in a high school have a sample mean score of 505 on the English portion of the SATs. If the sample standard deviation is 110, test the hypothesis that the high school's mean SAT score is 480 against the alternative hypothesis that the school's mean SAT score is greater than 480, at the 0.05 level of significance.

請問大一統計學這兩題有人看得懂嗎🥲

2. To study the attitude of mother and father towards their daughter participating in the outdoor games, a sample of 200 fathers and 250 mothers was investigated. In these two samples, 120 fathers and 50 mothers preferred their daughter to go for outdoor activities. Can it be concluded at a=0.01 level of significance that the proportion of father is significantly higher than that of mother in preferring their daughters for outdoor activities? 3. A firm has a generous but rather complicated policy concerning end-of-year bonuses for its lower-level managerial personnel. The policy's key factor is a subjective judgment of "contribution to corporate goals." A personnel officer took samples of 24 female and 36 male managers to see whether there was any difference in bonuses, expressed as a percentage of yearly salary. The data are listed here: Gender Bonus Percentage Female 9.2, 7.7, 11.9, 6.2, 9.0, 8.4, 6.9, 7.6, 7.4, 8.0, 9.9, 6.7, 8.4, 9.3, 9.1, 8.7, 9.2, 9.1, 8.4, 9.6, 7.7, 9.0, 9.0, 8.4 10.4, 8.9, 11.7, 12.0, 8.7, 9.4, 9.8, 9.0, 9.2, 9.7, 9.1, 8.8, 7.9, 9.9, 10.0, 10.1, 9.0, 11.4, 8.7, 9.6, 9.2, 9.7, 8.9, 9.2, 9.4, 9.7, 8.9, 9.3, 10.4, 11.9, 9.0, 12.0, 9.6, 9.2, 9.9, 9.0 (1) Is there significant evidence that the mean bonus percentage for males is larger than the mean bonus percentage for females? Use a a=0.05. (2) Estimate the difference in the mean bonus percentages for males and females using a 95% confidence interval. Male

想請問一下，這一大段的意思是什麼，雖然知道該怎麼翻譯，也有統計的基礎，但是翻出來的內容實在無法理解。 ISI 代表刺激間距

olds pooled across contrast conditions were significantly higher at the 30 and 60 ms ISIS compared with the pooled no-sound mean (30 ms= 2.31, df = 8, p = 0.049; 60 ms: t = 3.17, df = 8, p = 0.013). At the 0 and 90 ms ISIS, the increase in threshold was not significant (p>0.05). When contrast conditions were analyzed separately, a marginal effect of sound on orientation judgments at the 26% contrast level was revealed in a paired-samples t-test comparing the no-sound condition with the sound conditions collapsed across onset asynchronies (t 2.248, df = 5, p 0.07). At the 36% contrast level, the data consistently showed the same pattern of variation, although no effect of sound was observed (p > 0.05). -

有哪位大神可以寫過程給我嗎🙏🙏

Let P(X = x) = 1-3 1-3 , 13₁ x = 74 1 , x = 5 3 x = 8 (1) Obtain μ, o² (**)< (2) Obtain the sampling distribution of X for sample size 34 (3) Obtain E(X), Var (X). Does E(X) = µ? Does Var (X) = ²? Show your n answers.(數字要算出來)

請各位大大幫忙解題這題統計學作業！

1. In a large university, 20% of the students are business majors. A random sample of 100 students is selected, and their majors are- recorded. What is the probability that the sample contains at least 14 business majors? (10)

SCENARIO 8-3 To become an actuary, it is necessary to pass a series of 10 exams, including the most important one, an exam in probability... 繼續閱讀

請問這題⋯

3. If f(x) = et – 2,0 < x < 2, find the Riemann sum with n = 4 correct to six decimal places, taking the sample points to be midpoints. What does the Riemann sum represent? Illustrate with a diagram.

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