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7. Consider the data on the lifetime in months of two cell phone batteries shown below. Which battery has a higher probability of needing replacement

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7. Consider the data on the lifetime in months of two cell phone batteries shown below. Which battery has a higher probability of needing replacement in less than 45 months. Explain with mathematical calculations and reasoning [3 marks] Battery A Mean = 36.6. Standard Deviation=9.5 Battery B Mean = 40.7. Standard deviation =4.3

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