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_’_—___——_D .J’ _ — _——___ ___..I’ D____—___ __ .a’ __ D—_ " _____’ ______J conducted to see how steady the elderly 1s on their feet They had the subjects
stand on a force platform and have them react to a noise. The force platform then
measured how much they swayed forward and backward, and the data is in table
#7.3.1[} (”Maintaining balance while," 2013). Do the data show that the elderly
sway more than the mean forward sway of younger people, which is 18.125 mm?
Test at the 5% level. ‘Ihble #1110: anardfbackward Swa in mm of Elder] Subjects