Question: You are given the following data. Test the claim that there is a difference in the means of the two groups. Use α = 0.01.
Group A           Group B

_ __
x = 3            x = 8

1 2

s = 18            s = 19

1 2
n = 54           n = 84

1 2
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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