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. A researcher wants to investigate whether there is any difference in the average number of...

. A researcher wants to investigate whether there is any difference in the average number of hours worked by post-secondary students who are at least second-generation Canadians and those who are new immigrants. Seven college students who are secondgeneration Canadians (Group A), and five students who are new immigrants (Group B), were examined, and the average number of hours worked during summer months were recorded and are given below: Group A 36 38 36 29 32 34 37 Group B 30 39 31 35 33 Since it was not clear whether the assumptions for a t-test were valid, the researcher decided to employ non-parametric methods. Use the Wilcoxon rank sum test to determine whether the average number of hours worked by Group A is significantly different from those of Group B. Use a = 0.05.

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