## Question

###### The useful life of a battery is thought tobe normallydistributed with Ïƒ = 3.85months and Î¼ = 50.4months. For how many months should the battery beguaranteed if the manufacturer wishesonly 1.5% of batteries to be subject toreplacement under guarantee? Enter your answer to oneplace of decimal. Months will be understood and should notbe entered.

The useful life of a battery is thought to be normally distributed with Ïƒ = 3.85 months and Î¼ = 50.4 months. For how many months should the battery be guaranteed if the manufacturer wishes only 1.5% of batteries to be subject to replacement under guarantee? Enter your answer to one place of decimal. Months will be understood and should not be entered.

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