gms slo3. Consider the following hypothesis test.diw bzu eodH₂:μ₁ −μ₂ = 0 as oulavM2-M1H₁: M₁ M₂0 na prigriboos-sxsaidrogyr balisi-owl a bolavanomab ow.alqmsxSnlarestlin 15 The following results are for two independent samples taken from the two populations.itsta 1251 sme ont sau.21251bensDSC1612/1824LEARNSample 1ĐỘ QUIEU TOI KHpesC151gn0Sample 280=n₁n₂70x₁ = 104X₂X2= 106σ₁ = 8.402 = 7.67 2007gyaipaba os a.ononWhat is the value of the test statistic?ar lo amb.amb.What is the p-value?295 c.C.With a = .05, what is your hypothesis testing conclusion?lationszvisne odl

Given that : Sample 1 n1 = 80 m1 = 104 ?1 = 8.4 Sample 2 n2 = 70 m2 = 106 ?2 = 7.6 By using the two…

Answered: W .00 110H₂:μ₁ sulav μ₂=0 H₁: μ₁ −μ₂ #0…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Let X denote the sample average for a random sample with mean uu and variance 02. Consider the following estimator for u: W=n+2/n+1°X Is W as consistent estimator of u? a. Yes b. No c. It depends
1
You wish to test the following claim (H0,Ha) at a significance level of α=0.002 Ho:μ1=μ2 Ha:μ1≠μ2You obtain the following two samples of data. Sample #1 Sample #2 91.1 91.9 75.1 68.6 77.8 97 81.3 76.3 95 89.6 75.1 81.3 93.6 85.7 82.7 78.9 99.4 87.8 91.9 95.5 71.9 73.8 92.7 86.7 79.3 71.4 60.2 95 75.9 72.4 71.4 73.8 86.7 82.7 75.9 78.2 64.9 92.7 85 99.4 89.6 97 80 83.7 68.6 100.1 96.5 98.8 79.6 76.7 56.2 63.9 67.4 51.6 95.4 78.6 63.1 71.3 93.3 105.2 70.3 68 64.7 91.8 90.4 82.3 62.3 104.2 92.3 89.9 103.2 81.1 73.3 105.2 79.4 79.8 94.3 44.4 67.4 44.4 44.4 89 66.1 79 96.6 58.2 59.4 77.3 78.6 113 93.3 94.9 76.9 87.7 89.5 99.2 86 70.3 76 69.2 83.5 57 110.8 63.9 61.4 110.8 86.9 90.4 44.4 71.3 What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? For this calculation, use the degrees of freedom reported from the…
The corrosive effects of various soils on coated and uncoated steel pipe was tested by using a dependent sampling plan. The data collected are summarized below, where d is the amount of corrosion on the coated portion subtracted from the amount of corrosion on the uncoated portion. Does this random sample provide sufficient reason to conclude that the coating is beneficial? Use a = 0.01 and assume normality. n- 40, Σd- 207, Σα? = 6199 (a) Find t. (Give your answer correct to two decimal places.) (ii) Find the p-value. (Give your answer correct to four decimal places.) (b) State the appropriate conclusion. O Reject the null hypothesis, there is significant evidence that the coating is beneficial. Reject the null hypothesis, there is not significant evidence that the coating is beneficial. Fail to reject the null hypothesis, there is significant evidence that the coating is beneficial. Fail to reject the null hypothesis, there is not significant evidence that the coating is beneficial.
1.3.2 Consider the output given below that was obtained using the One Proportion applet. Use information from the output to find the standardized statistic for a sample propor- tion value of 0.45. Probability of success (n): 0.30 Sample size (n): 25 Number of samples: 1000 O Animate Draw Samples Total = 1000 180 Mean = 0.301 SD = 0.091 120 60 0.08 0.16 0.24 0.32 0.40 0.48 0.56 0.64 Proportion of success
As a bonus assignment a former student checked if your professor gave a statisticallysignificant difference in grades between his male and female students. She based herstudy based on grades assigned in intermediate Econ courses (Econ 303, 305 and 317)and her sample included nm = 485 male students and nf = 264 female students. Theaverage grades received were xm = 84.6 and xf = 85.8 The population standad deviation were σ m = 12.0 and σ f = 11.4 8. From the same extra-credit study as in question 7 see above, this former student found that the proportion of female students in principle courses (Econ 203, 205) was ?̅? = 0.380, while the proportion of female students in intermediate courses (Econ 303, 305, 317) was ?̅? = 0.352. The principle courses sample size was np = 782, while the intermediate courses sample size was ni = 749. Test the hypothesis that female students are less in intermediate courses using a 90% confidence level and the p-value approach.
Student 1:33 PM Wed Apr 21 * 73% O O Q B STA+2023+EC+C12 Home Insert Draw Layout Review View Calibri Bold (Body В I B I U А.. A Read Only - You can't save changes to this file. Save a copу 3. Are health and happiness related? The following data represents the level of happiness and level of health for a random sample of individuals from the General Social Survey. Does the evidence suggest that health and happiness are related. Let a=0.05 Education/Health Excellent Less than High Good Fair Рor 72 202 199 62 School High School Junior College 465 877 358 108 80 138 49 11 Bachelor 229 276 64 12 Graduate 130 147 32 2 ||
Q. 7 For the distribution and observed values given below, use the chi-square goodness-of-fit test to decide at the specified significance level whether the distribution of the variable differs from the given distribution. Distribution: 0.2 0.4 0.3 0.1 Observed frequencies: 85 215 130 70 Significance level = 0.05 Table: obserred Breqi Ex pected Free' Diff. (0-E) chi-sa. O -E Distr. 2.25 (-2) (so0) (• 4) (500) - 15 225 85 215 130 70 Totah df = 3 2. Caitrcal Valne = Compare cv to X- Do you rejeet the Nue a Do not seject ? what doss this mean Write here
Question 2
OC. None of the above QUESTION 7 In testing the hypotheses H₂=0.40, H¸:л>0.40, at 5 % level of significance. if the sample proportion is 0.45 an 0 the sample size is 49; which one of the following statements is incorrect? O A. A one-tail is used. OB. The standard error is 0.0070 O C. The test statistic is 0.7143 OD. p-value is 0.2389 Click Save and Submit to save and submit. Click Save All Answers to save all answers. 0 H 2 Enjoy a

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