You are given the following data. Test the claim that there is a difference in the means of the two
Question: You are given the following data. Test the claim that there is a difference in the means of the two groups. Use 
= 0.05.
Group A Group B
= 2 
= 5
= 19 
= 18
= 31 
= 49
? 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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