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Jon Snow conducts a Chi-square test and obtains a Chi-square value of 4.0. He sets the significance level Alpha at 0.05. When he consults the Chi-square table, he concludes that the null hypothesis must be rejected. How many degrees of freedom are there in Jon Snow's test? (a) 1(b) 2(c) Less than 1(d) both (b) and (c)
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