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Show your work 24 A manufacturer of mobile phones has determined that the phones require servicing after a mean of 30 months a standard deviation

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Show your work 24 A manufacturer of mobile phones has determined that the phones require servicing after a mean of 30 months a standard deviation of 2 4 months What length of warranty should be offered if the manufacturer wants to repai less than 5 of the phones under the warranty 3 marks

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