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We test for a hypothesized difference between two independent population means: H 0 : 1 = 2 . The population standard deviations are unknown but
We test for a hypothesized difference between two independent population means: H0: 1 = 2. The population standard deviations are unknown but assumed equal. The number of observations in the first sample is 35 and 32 in the second sample. How many degrees of freedom are associated with the critical value?
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