Mathematics (AS & A Level) · Oct / Nov 2021 · Paper 63 · Question 6
9709
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The random variable T denotes the time, in seconds, for 100 m races run by Tania. T is normally distributed with mean - and variance 32. A random sample of 40 races run by Tania gave the following results. n = 40 Σt = 560 Σt2 = 7850
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6(a)[3]
6(b)[5]
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