Question: In a left-tailed test comparing two means with variances unknown but assumed to be equal, the sample sizes were n 1 = 8 and n

In a left-tailed test comparing two means with variances unknown but assumed to be equal, the sample sizes weren₁= 8 andn₂= 12. At= .05, the critical value would be:

-1.645

-2.101

-1.734

-1.960

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