jenniepooh124p12mr9 jenniepooh124p12mr9

16-12-2017
Mathematics

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the shelf life of fresh bread has a mean of 6 days with a standard deviation of 1/2 of a day. what percent of loaves at the bakery would be expected to spoil before 5 days?

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millhouse201 millhouse201

16-12-2017

Since you're looking at 2 standard deviations from the mean, you follow the 66 95 rule which says 95 % of the data is within 2 standard deviations. however you just need half of that since the other half is on the other side of the data meaning it last longer than 7 days. So 2.5% is the answer.

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