A sample of 6 students has the mean marks as 4 and SD as 1.5. A second sample of 4 students has the mean marks as 9 and
Posted: Mon Nov 15, 2021 10:10 am
A sample of 6 students has the mean marks as 4 and SD as 1.5. A second sample of 4 students has the mean marks as 9 and SD as 2.5. If two samples are combined, then find the variance of the combined samples. Mavi mavinna