Mathematics (AS & A Level) · Oct / Nov 2017 · Paper 72 · Question 6
9709
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In a certain factory the number of items per day found to be defective has had the distribution Po1.03 . After the introduction of new quality controls, the management wished to test at the 10% significance level whether the mean number of defective items had decreased. They noted the total number of defective items produced in 5 randomly chosen days. It is assumed that defective items occur randomly and that a Poisson model is still appropriate.
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6(i)[6]
6(ii)[3]
6(iii)[1]
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