HELP ASAP. 31) To determine if the average sales per week for store A is greater than the averagesales per week for store B you take sales data on 12 weeks from each store. You testthe hypothesis Ho:HA ≤ MB versus Ha: HA > HB and find a p-value of 0.62. Todetermine if the average sales per week depends on store, you wish to test thehypothesis Ho: A = HB versus H₂: MAHB. What is the p-value for this hypothesistest?A) 0.76B) 0.38C) 0.62D) 0.31E) 1.2432) To determine if the proportion of undergraduate students who are left handed depends ontheir class standing (Freshman, Sophomore, Junior or Senior) you identify the hypothesisHo: PFreshman = Psophomore = PJunior = PseniorHa: Not all population proportions are equalTo test the hypothesis you survey 180 students, records their class standing and ask them if theyare left handed (Yes or No). The data appears in the table below (Left Handed worksheet).LeftHandedYesNoTotalFreshman42630Class StandingSophomore64450Junior53540Senior65460Total21159180Using the sample data, you calculate a test statistic of 0.275. What is the p-value forthe hypothesis test?A) 0.05

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Answered: 31) To determine if the average sales…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter7: Analytic Trigonometry

Section7.6: The Inverse Trigonometric Functions

Problem 94E

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5. In a large class, the instructor ran a regression with the independent variable(x) as the gradc on the first cxam and the dependent variable(y) bcing the grade on the second exam She found the cquation to be: Y 29.25+57X Knowing that your friend got a 78 on the first cxam, what value would you predict she got on the socond exam? a) 71.43 b) 72.57 c) 78.00 d) 73.71 6. A test result is one that detects the condition when the condition is present is called. a) Truc Negative b) False positive c) Sensitivity d) True Positive 7. A test result is one that detects the condition when the condition is absent is called. a) True Negative b) False positive c) Sensitivity d) True Positive IN 8. The proportion of positives that correspond to the presence of the condition is called The formula is TN+FP a) Specilicity b) Predictive value positive c) Sensitivity dy Predictive valuc negalivc
Is there a relationship between the number of hours per week a high school student spends on extracurricular activities and their academic performance? Variable Less than 2 2 to 12 More than 12 ABC 11 68 3 DF 9 23 5 Statistical Test = 6.926 Df =2 and Pvalue = 0.31
An instructor for a test preparation course claims that the course will improve the test scores of students. The table shows the critical reading scores for 14 students the first two times they took the test. Before taking the test for the second time, the students took the instructor's course to try to improve their critical reading test scores. At a = 0.01, is there enough evidence to support the instructor's claim? Complete parts (a) through (f). Student 9 10 11 12 13 14 O 471 510 356 533 363 592 621 575 433 538 526 515 436 411 Score on second test 478 513 381 568 325 640 592 585 444 559 568 545 458 442 1 2 3 4 6 8 Score on first test (c) Calculate d and sd- d= -0.411 (Type an integer or a decimal. Round to three decimal places as needed.) Calculate sd- (Type an integer or a decimal. Round to three decimal places as needed.) (d) Use the t-test to find the standardized test statistic t. (Type an integer or a decimal. Round to three decimal places as needed.) (e) Decide whether to…
Lecture(11.14): A professor offered a course half online and half in person.The professor hypothesized that students were spending less time engaged with course during online than in person,At the end of the semester students were asked to provide the amount of time they tended in a week. The weeks were classified as online or in person and the average amount of time for 15 weeks is given below. Online: 4 3 5 6 2 2 4 7 5 4 3 2 6 6 3 In person: 5 5 4 7 3 4 4 6 4 5 3 4 5 8 4 Test the hypotheses at (alpha= 0.05) level of significance using the 5 step hypotheses testing. Make sure you clesrly state the null and alternative hypotheses. Round your answer to 2 decimal places; person. and the average amount of time spent for 15 students
5. In a large class, the instructor ran a regression with the independent variable(x) as the grade on the first exam and the dependent variable(y) being the grade on the second exam. She found the equation to be: Y = 29.25 + .57X Knowing that your friend got a 78 on the first exam, what value would you predict she got on the second exam? a) 71.43 b) 72.57 c) 78.00 d) 73.71 6. A test result is one that detects the condition when the condition is present is called. a) True Negative b) False positive c) Sensitivity d) True Positive 7. A test result is one that detects the condition when the condition is absent is called. a) True Negative b) False positive c) Sensitivity d) True Positive TN 8. The proportion of positives that correspond to the presence of the condition is called. The formula is TN + FP a) Specificity b) Predictive value positive c) Sensitivity d) Predictive value negative 9. A measurement the ability of a test to detect the condition when the condition is present is…
Only need part i, j, k. Thank you for the help!
What does MS between reflects?
An instructor for a test preparation course claims that the course will improve the test scores of students. The table shows the critical reading scores for 14 students the first two times they took the test. Before taking the test for the second time, the students took the instructor's course to try to improve their critical reading test scores. At a = 0.01, is there enough evidence to support the instructor's claim? Complete parts (a) through (f). Student Score on first test 1 3 4 9 10 11 12 13 14 D 436 396 447 520 526 517 596623 575 403 591 622 527 338 Score on second test 437 405 457 545 474 530 536 626 590 407 622 658 551379 5 6 7 8 Identify the rejection region(s). Choose the correct answer below. OA. t3.012 O C. t 3.012 O D. t 2.650 (c) Calculate d and sa. d = -7.143 (Type an integer or a decimal. Round to three decimal places as needed.) Calculate sa. (Type an integer or a decimal. Round to three decimal places as needed.)
An instructor for a test preparation course claims that the course will improve the test scores of students. The table shows the critical reading scores for 14 students the first two times they took the test. Before taking the test for the second time, the students took the instructor's course to try to improve their critical reading test scores. At a = 0.01, is there enough evidence to support the instructor's claim? Complete parts (a) through (f). Student Score on first test Score on second test 621 573 577 627 373 369 399 717 488 553 634 478 558 623 10 11 12 13 14 D 618 518 503 604 415 350 439 609 409 481 594 431 527 591 1 2 3 4 6 8 Identify the rejection region(s). Choose the correct answer below. O A. t 2.650 O B. t 3.012 OC. t3.012 (c) Calculate d and sd. d = - 35.786 (Type an integer or a decimal. Round to three decimal places as needed.) Calculate sd- Sa = 133.096 (Type an integer or a decimal. Round to three decimal places as needed.)
An instructor for a test preparation course claims that the course will improve the test scores of students. The table shows the critical reading scores for 14 students the first two times they took the test. Before taking the test for the second time, the students took the instructor's course to try to improve their critical reading test scores. At a = 0.01, is there enough evidence to support the instructor's claim? Complete parts (a) through (f). Student Score on first test Score on second test 576 551 605 514 583454 432 334 405 393 363 660 551 423 1 2 3 4 570 539 580 488 6 11 12 13 14 D 477 329 398 377 352 627 504 375 7 8 10 (a) Identify the claim and state H, and Ha. The claim is "The students' critical reading test scores V the second time they took the test." Let u. be the hypothesized mean of the students' first score minus their second score. State H, and H. Choose the correct answer below. OC. Ho: Ha sd O B. Ho: Hazd Ha: Hg 0 OF. Ho: Ha 20 O D. Ho: Ha =0 O E. Ho: Ha #0 Ha Hg…

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