Table #7.3.8: Economic Dynamism of Middle Income Countries 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543...

Table #7.3.8: Economic Dynamism of Middle Income Countries

7.3.8

Maintaining your balance may get harder as you grow older.  A study was conducted to see how steady the elderly is 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 #7.3.10 ("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.

Table #7.3.10: Forward/backward Sway (in mm) of Elderly Subjects