Find a 95% confidence interval for the difference of two means
when you have independent samples, both of size 36, from two
populations, in which the variances are not known to be equal. In
this case, n1=36, s12=8.2, the
first sample mean is equal to 7.9; n2 =36,
s22=10.4, the second sample mean is equal to
9.1
Interpret the interval once you find it. Namely, can you
conclude one mean is greater than the other mean and if so, which...