-- Students of mathematics in a large university are given a percentage mark in their annual examination. In a sample of nine students the following marks were found: 28 32 34 39 41 42 42 46 56 Students of history also receive a percentage mark. A sample of five students reveals the following marks: 53 58 60 61 68 Do these data support the hypothesis that the marks for mathematics are more variable than the marks for history? Quantify your conclusion. Comment on your modelling assumptions. F4 Xỉ: x x: 4.78 6.04 23.7 22.4 21.0 distribution N(0, 1) 95% percentile 1.65

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