Question 1081181
This is a two sample t-test
t df=88, 0.975 = (x1bar-x2bar)/sp((1/n1^2)+(1/n2^2))
This will give a t-test of -2.49 with a significance 0f 0.0149.
Based on the 0.05 significance level, there is a significant difference.
The formula is given there, a calculator for STAT TESTS  4, and fill in the information.