Question 928151
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Hi
	       Heavy Use,	Recreational Use,     No Use      tot
Treatment	   15	          15	               45          75
exp                       32.5            15                   27.5
No Treatment	   50	          15	               10          75
Exp                       32.5            15                   27.5
tot                              65                   30                   55           150
{{{E[1,1]}}} = 75*65/150 = 32.5
{{{E[1,2]}}} = 75*30/150 = 15
{{{E[1,3]}}} = 75*55/150 = 27.5
{{{E[2,1]}}} = 75*65/150 = 32.5
{{{E[2,2]}}} = 75*30/150 = 15
{{{E[2,3]}}} = 75*55/150  = 27.5
..........
X^2 = (15-32.5)^2/32.5 + (15-15)^2/15 + (45-27.5)^2/27.5 + (50-32.5)^2/32.5 + (15-15)^2/15 + (10-27.5)^2/27.5 = 9.42 + 11.14 +  9.42 + 11.14 = 41.11