Question: If the sampling distribution of X1X2 cannot be assumed normal, we _________ . Multiple Choice must use the tdf distribution and calculate the degrees of

If the sampling distribution of X1X2 cannot be assumed normal, we _________ . Multiple Choice must use the tdf distribution and calculate the degrees of freedom using n1, n2, s1, and s2 to compute a confidence interval must use the tdf distribution with n1 + n2 2 degrees of freedom to compute a confidence interval are unable to compute a confidence interval are still able to use the z distribution to compute a confidence interval

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