Suppose that the lifetime of lightbulbs are approximately normally distributed with a mean of 56 hours in a standard deviation of 3.2 hours what proportion of lightbulbs will last 50 hours or less?

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27-06-2024
Mathematics

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Suppose that the lifetime of lightbulbs are approximately normally distributed with a mean of 56 hours in a standard deviation of 3.2 hours what proportion of lightbulbs will last 50 hours or less?

Sagot :

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Suppose that the lifetime of lightbulbs are approximately normally distributed with a mean of 56 hours in a standard deviation of 3.2 hours what proportion of lightbulbs will last 50 hours or less?

Sagot :

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