Mathematics (AS & A Level) · May / June 2026 · Paper 63 · Question 5
9709
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The lengths, X cm, of Wamba snakes have mean n cm. Research has shown that, for the whole population of Wamba snakes, n = 41.5. A researcher claims that, for the Wamba snakes in a particular region, the mean length is less than 41.5. She measures the lengths of a random sample of 150 Wamba snakes in this region. The results are summarised below. n = 150 x / = 6030 x2 / = 252 014
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5(a)[3]
5(b)[5]
5(c)[1]
5(d)[5]
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