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if you could help me understand that would be lovely A manufacturer knows that their items lifespans are normally distributed according to NV(8.2, 2.3). What

if you could help me understand that would be lovely

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A manufacturer knows that their items lifespans are normally distributed according to NV(8.2, 2.3). What proportion of the items' lifespans will be longer than 4 years? Round to 4 decimal places

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