Mathematics (AS & A Level) · Oct / Nov 2025 · Paper 61 · Question 5
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As printed in the paper
The question as text
It is known that 20% of households in a certain country contain more than 4 people. Laxmi believes that, in her town, the percentage is lower than 20%. She chooses a random sample of 40 households in her town and notes the number which contain more than 4 people. She then carries out a test at the 2.5% significance level using a binomial distribution.
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Show the answer and mark scheme
5(a)[4]
5(b)[1]
5(c)[1]
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