Repeat Exercise X6.15, but do not assume equal variances. Are the two sets of results significantly different

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Repeat Exercise X6.15, but do not assume equal variances. Are the two sets of results significantly different (test at 5%)?


Data from Exercises 6.15

During an examination board concerns were raised concerning the marks obtained by students sitting the final year advanced economics (AE) and e-Marketing (EM) papers (Table 6.6).

AE 51 66 50 48 54 83 68 48 45 Table 6.6 AE 63 35 9 39 35 44 68 36 EM 71 69 63 66 43 34 57 58 68 EM 68 53 65

Historically, the sample data varies as a normal distribution and the population standard deviations are approximately equal. Assess whether there is a significant difference between the two sets of results (test at 5%).

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Business Statistics Using Excel

ISBN: 9780199659517

2nd Edition

Authors: Glyn Davis, Branko Pecar

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