Mathematics (AS & A Level) · Feb / March 2023 · Paper 62 · Question 6
9709
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The question as text
Last year, the mean time taken by students at a school to complete a certain test was 25 minutes. Akash believes that the mean time taken by this year’s students was less than 25 minutes. In order to test this belief, he takes a large random sample of this year’s students and he notes the time taken by each student. He carries out a test, at the 2.5% significance level, for the population mean time, - minutes. Akash uses the null hypothesis H0: - = 25.
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6(a)[1]
6(b)[2]
6(c)[3]
6(d)[3]
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