Multiple Choice
Assume the competing hypotheses take the following form: H0: µ1- µ2 = 0,HA: µ1- µ2 ≠ 0,where µ1 is the population mean for population 1 and µ2 is the population mean for population 2.Also assume that the populations are normally distributed and we use independent sampling.The population variances are not known and cannot be assumed equal.Which of the following expressions is appropriate test statistic?
A)
B)
C)
D)
Correct Answer:

Verified
Correct Answer:
Verified
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