Answered: A study reported in the Journal of the…

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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A study reported in the Journal of the American Medical Association investigated the cardiac demands of heavy snow shoveling. Ten healthy men underwent exercise testing with a treadmill and a cycle ergometer modified for arm cranking. The men then cleared two tracts of heavy, wet snow by using a lightweight plastic snow shovel and an electric snow thrower. Each subject's heart rate, blood pressure, oxygen uptake, and perceived exertion during snow removal were compared with the values obtained during treadmill and arm-crank ergometer testing. Suppose the following table gives the heart rates in beats per minute for each of the 10 subjects.

Treadmill	Arm-Crank Ergometer	Snow Shovel	Snow Thrower
177	205	180	98
151	177	164	120
184	166	167	111
161	152	173	122
192	142	179	151
193	172	205	158
164	191	156	117
207	170	160	123
177	181	175	127
174	154	191	109

At the .05 level of significance, test for any significant differences.

Complete the following table (to 2 decimals, if necessary). Round p-value to four decimal places. If your answer is zero enter "0".

Source of Variation Sum of Squares Degrees of Freedom Mean Square F p-value

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