The following table lists weights (kg) of randomly selected U.S. Army personnel obtained from the ANSUR I study conducted in 1988 and the ANSUR II study conducted in 2012. If we use the data with two-way analysis of variance and a 0.05 significance level, we get the accompanying display. What do you conclude? 

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Female Male ANSUR I - 1998 ANSUR II - 2012 72.6 56.0 66.7 53.6 54.5 77.9 57.3 58.2 55.3 69.8 64.0 59.0 70.7 77.1 77.3 74.4 75.4 83.0 82.4 65.0 96.1 97.9 54.0 60.8