Assume that a researcher is interested in the criterion-related validity between a smart phone app to screen signs of concussion and a comprehensive physician's exam of concussion. Eleven participants are randomly selected to go through both the smart phone app screening and the physician's exam. The results are reported in the following table. Conduct the appropriate statistical procedure to test the criterion-related validity of the smart phone app screening for concussion. Due to the exploratory nature of this study, use two-tailed test and assume a = .10. (Y - Ymean) (X-X,mean)(Y-Ymean) (X-Xmean)? -46.6 App (X) Exam (Y) (X - Xmean) (Y - Ymean)? 56 65 -39.9 1856 1589 2169 4702 3314 556 36 43 -59.9 -68.6 4104 3583 40 54 -55.9 -57.6 3216 3120 79 88 -16.9 -23.6 397 284 80 70 -15.9 -41.6 659 251 1728 74 77 -21.9 -34.6 756 478 1195 37 72 -58.9 -39.6 2329 3464 1566 46 64 -49.9 -47.6 2372 2486 2263 75 88 -20.9 -23.6 492 435 556 79 81 -16.9 -30.6 515 284 935 69 79 -26.9 -32.6 875 721 1061 Total 671 781 17571 16695 20044 MEAN 95.9 111.6

Assume that a researcher is interested in the criterion-related validity between a smart phone app to screen signs of concussion and a comprehensive physician's exam of concussion. Eleven participants are randomly selected to go through both the smart phone app screening and the physician's exam. The results are reported in the following table. Conduct the appropriate statistical procedure to test the criterion-related validity of the smart phone app screening for concussion. Due to the exploratory nature of this study, use two-tailed test and assume a = .10. (Y - Ymean) (X-X,mean)(Y-Ymean) (X-Xmean)? -46.6 App (X) Exam (Y) (X - Xmean) (Y - Ymean)? 56 65 -39.9 1856 1589 2169 4702 3314 556 36 43 -59.9 -68.6 4104 3583 40 54 -55.9 -57.6 3216 3120 79 88 -16.9 -23.6 397 284 80 70 -15.9 -41.6 659 251 1728 74 77 -21.9 -34.6 756 478 1195 37 72 -58.9 -39.6 2329 3464 1566 46 64 -49.9 -47.6 2372 2486 2263 75 88 -20.9 -23.6 492 435 556 79 81 -16.9 -30.6 515 284 935 69 79 -26.9 -32.6 875 721 1061 Total 671 781 17571 16695 20044 MEAN 95.9 111.6

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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