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(20 points) A biomechanics researcher is developing neural prosthetics for assisting paralyzed patients. She has taken...

(20 points) A biomechanics researcher is developing neural prosthetics for assisting paralyzed patients. She has taken measurements of muscle movements before a training session and after a training session. The data appear below. 4. Subject Before Training Session After Training Session 10 13 13 21 7 Provide a point estimate of the mean change in muscle movement from before the training 1 14 13 18 9 4 5 a. session to after the training session. Compute the standard deviation for the change in muscle movement from before training to after the training session. b.

(20 points) A biomechanics researcher is developing neural prosthetics for assisting paralyzed patients. She has taken measurements of muscle movements before a training session and after a training session. The data appear below. 4. Subject Before Training Session After Training Session 10 13 13 21 7 Provide a point estimate of the mean change in muscle movement from before the training 1 14 13 18 9 4 5 a. session to after the training session. Compute the standard deviation for the change in muscle movement from before training to after the training session. b.
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Change in muscle movement from before the training session to after the training session i.e. difference from before training session to the after training session (di) Before Training Session After Training Session After - before di Subject 10 13 13 21 14 13 18 9 4 Total a. Point estimate of the mean change would be b. Standard deviation is given by -ay For Σ(4-d)2, subtract mean change d (-0.2) from each di, square it and find total After - before di Before TrainingAfter Training (di - d) Subject Sessiorn Sessiorn 10 13 13 21 14 13 18 9 0.64 0.64 0.04 10.24 3.24 14.8 0 4 Total So, (a - d- 14.8 Hence, 14.8 3.7 1.9235Note that, the formula used for standard deviation is for sample standard deviation; for population standard deviation the formula is

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