The mean of the weekly grocery bills, in pounds, for a household over 6 weeks is \(£58\). The bills for the first five of these weeks are \(£52\), \(£61\), ...
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The mean of the weekly grocery bills, in pounds, for a household over 6 weeks is \(£58\). The bills for the first five of these weeks are \(£52\), \(£61\), \(£55\), \(£64\) and \(£59\).
- Work out the total of the bills for all 6 weeks. (1)
- Work out the bill for the sixth week. (2)
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