[单选题]

Independent samples drawn from normally distributed populations exhibit the following characteristics:

Assuming that the variances of the underlying populations are equal, the pooled estimate of the common variance is 2,678.05. The t-test statistic appropriate to test the hypothesis that the two population means are equal is closest to:

A.1.90.

B.0.29.

C.0.94.

参考答案与解析: