我要比对的两组数据一组样本量300多，一组3000多，这两组数据能在stata里面是有ttest做他们二者的均值差值T检验吗？

stata里面的help是这样描述的：
Description

    ttest performs t tests on the equality of means.  The test can be
    performed for one sample against a hypothesized population mean.
    Two-sample tests can be conducted for paired and unpaired data.  The
    assumption of equal variances can be optionally relaxed in the unpaired
    two-sample case.