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?

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