Muscles flex when stimulated through electric impulses either to motor points (p
ID: 3158665 • Letter: M
Question
Muscles flex when stimulated through electric impulses either to motor points (points on the muscle) or to nerves. An article in a medical engineering journal reports a study in which both methods were applied to the upper arm regions of each of several. The latency time (delay between and contraction) was measured (in milliseconds) for each subject. The results for fixe subjects are presented in the following table. Can you conclude that there is a difference in latency period between motor point and nerve stimulation? There is no difference between the latency periods. There is indeed a difference between the latency periods.Explanation / Answer
nerve motor point difference Ho : miu D = 0 61 59 2 Ha : miu D is not 0 58 53 5 57 56 1 t = ( 4.2) / ( 2.59 / srqt 5 ) 37 31 6 t = 3.626 54 47 7 x-bar 4.2 for alpha = 0.05 df = 4 critical value :2.776 SD 2.59 n 5 since t > critical value we reject Ho conclusion there is indeed a difference between the latency periods
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