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chi square test - using R

z-test for independent proportions


Gives something like this:

 2-sample test for equality of proportions without continuity
        correction

data:  tab1
X-squared = 9.457, df = 1, p-value = 0.002103
alternative hypothesis: two.sided
95 percent confidence interval:
 0.05388769 0.23737875
sample estimates:
   prop 1    prop 2
0.4179104 0.2722772