When using the t test, we reject H0 _________.
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- Suppose that an examination was hard and most students received extremely low grade on it. This is an example of _______.QUESTION 8 The Global Business Travel Association (GBTA) reported the domestic airfare for business travel for the current year an flights with their domestic airfares (in $) shown for both years. Suppose GBTA wished to see if the average airfare for th airfare for the previous year at a=.01. Current 352 760 558 451 252 660 Previous 348 749 548 456 253 640 For the hypothesis stated above, what is the critical value (in terms of "Current" minus "Previous")? a. None of the answers is correct b. 2.821 c. 2.764 d. 3.365 e. 3.143 QUESTION 9 Dep.=% WRK Indep.-% MGT SUMMARY OUTPUT Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Air 000 000 F4 F2 F3What is the value of Σ(X2 + 2) for the following scores? Scores: 9, 10, 8, 6, 5, 9, 6, 5 a. 450 b. 464 c. 624 d. 712
- I need the answer as soon as possibleRiley conducts a study comparing the performance of individuals on the first quiz in each of two classes taken in the first term of their freshman year. The scores, out of 100, are provided for nine individuals in both classes. Class 1: 87, 78, 87, 85, 93, 98, 83, 82, 73 Class 2: 87, 86, 92, 90, 90, 91, 89, 78, 76 Given s = 5.175, Cohen's d is _____.In a hypothesis test the expression (1-β) allows us to estimate... A. The probability of making a Type I error B. The probability of making a Type II error C. The power or power of the test D. The probability of accepting the null hypothesis E. The type I error of the test
- An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d = (verbal SAT scores prior to taking the prep course)-(verbal SAT scores after taking the prep course). Use a significance level of α = 0.05 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course. Student 1 2 3 4 567 Score on first SAT 380 440 470 490 440 Score on second SAT 420 530 530 550 460 420 410 490 430 Step 1 of 5: State the null and alternative hypotheses for the test. Answer 0 Ho: Md 0 Ha IVA A VI Copy Data Tables Keypad Keyboard ShortcutsThe data represent the results for a test for a certain disease. Assumeone individual from the group is randomly selected. The individual did have The individual did not the disease have the diseasePositive 457 24Negative 78 341a. Find the probability of getting someone who tested positive,given that he or she did not have the disease. Round your answer tofour decimal places. Don’t forget to show your work.b. Find the probability of getting someone who tested negative,given that he or she did have the disease. Round your answer to fourdecimal places. Don’t forget to show your workAn SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d = (verbal SAT scores prior to taking the prep course)-(verbal SAT scores after taking the prep course). Use a significance level of a = 0.01 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course. 1 234567 520 570 540 380 370 490 450 Student Score on first SAT Score on second SAT 540 600 610 470 410 510 480 Step 1 of 5: State the null and alternative hypotheses for the test. Answer 0 Ho: Md 0 Ha Ma IA IV V A || < = Copy Data Tables Keypad Keyboard Shortcuts
- I ONLY NEED HELP ON D and E thank youIn a recent study, 50 males used a new weight-loss supplement, and 37 of them experienced weight loss after two weeks. In the same study, 25 females used the same supplement, and 16 of them experienced weight loss after two weeks. Fill in the blanks below to make the most reasonable statement possible The new weight-loss supplement was more effective on males or females in the study. That is because _______% only failed to lose weight after two weeks, whereas, _______ % of males or females failed to lose weight after two weeksA college biology teacher wants to know whether being tutored at the study lab will help her students score higher on their final exam. She randomly selects 60 students from among the four sections of Introductory Biology that she teaches. Then she randomly divides them into two groups of 30 students each. Group A will be tutored at the study lab, and group B will not be tutored at the study lab. After all 60 students take their final exam, she will compare their results. Which of these are the treatments in this experiment?