Calculate the t with the following information Calculate the test-statistic, t with the following information.n1=50, n2=60, x1=2.59, x2=2.98, s1=0.32, s2=0.69, , , ,

Question

Calculate the t with the following information.

Calculate the test-statistic, t with the following information.

n1=50, n2=60, x1=2.59, x2=2.98, s1=0.32, s2=0.69, , , ,

Answer 1

This question can be answered in one of two ways, depending on whether or not the variances are equal.

If they are equal, then you would use standard error pooled. If they are unequal, then you would use standard error un-pooled.

If equal, the t-statistic will look like this:

t = (x1-x2)/sqrt(((n1-1)*s1^2 +(n2-1)s2^2)/(n1+n2-2))

If unequal, the t-statistic will look like this:

t = (x1-x2)/sqrt((s1^2/n1 + s2^2/n2))