The number of toasters sold by a shop each week may be modelled by a Poisson distribution with mean 4 A random sample of 35 weeks is taken and the mean number of toasters sold per week is found. Find an estimate for $$\(\lambda\)$$ (4) A second, independent random sample of 40 weeks is taken and a second $$\(99 \%\)$$ confidence interval for $$\(\lambda\)$$ is found.

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