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Question: The MBA department is concerned that dual degree students may be receiving lower grades than the regular MBA students. Two independent random samples have been selected. 100 observations from population 1 [dual degree students] & 100 from population two [MBA students]. The sample means obtained are X1(bar)=85 & X2(bar)=88. It is known from previous studies that the population variances are 4.0 & 5.0 respectively. Using a level of significance of .10, is there evidence that the dual degree students are receiving lower grades? Explain your answer to receive full credit.

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