Question: You are given the following data. Test the claim that there is a difference in the means of the two groups. Use a = 0.05.
Group A Group B
xbar1 = 10 xbar2 = 4
s1 = 15 s2 = 19
n1 = 89 n2 = 69

State the null and alternate hypotheses

Determine which test statistic applies, and calculate it

Determine the critical value(s).

State your decision: Should the null hypothesis be rejected?