4.105 INDEX FINGER MUSCLE FATIGUE AND PISTOLFIRING. Refer to the Human Factors (November 2019) study ofthe effects of finger strength and muscle fatigue on the ability toshoot a pistol, Exercise 2.80 (p. 86). Recall that musclestrength was measured (in Newtons) by the maximum voluntaryisometric contraction (MVIC) of the index finger. Theresearchers found that when at rest, expert male shooters have amean MVIC of 160.3 N and a standard deviation of 19.6 N.However, after repeated shooting sessions, the expert shootershave a mean MVIC of 133.5 N and a standard deviation of 19.6N. Assume that the distribution of MVIC strength scores in bothscenarios is approximately normal.a. When at rest, what is the probability that an expertshooter has an MVIC value of 120 N or less?b. After repeated shooting sessions, what is the probabilitythat an expert shooter has an MVIC value of 120 N orless?c. What MVIC value will be exceeded by 75% of the expertshooters when at rest?d. Repeat part c for expert shooters following repeatedshooting sessions.e. If you observe an expert shooter with an MVIC value of120 N or less, what can you infer about when - at restor after repeated shooting sessions - the measurementwas taken?

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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The following data concerning the birth weight (in grams) of newborns resulted from a study that attempted to determine the effect of maternal smoking on unborn babies. Nonsmokers Smokers n = 1820 m = 1340 X = 3480 grams Y = 3260 grams %3D S = 9.2 grams Sy = 10.4 grams %3D Test the hypothesis, at the 5 percent level of significance, that the mean weight of a newborn is the same whether or not the mother is a smoker d notes

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