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Mathematics, 06.09.2019 02:30 Ideen

The number of pieces of popcorn in a large movie theatre popcorn bucket is normally distributed, with a mean of 1720 and a standard deviation of 20. approximately what percentage of buckets contain between 1680 and 1760 pieces of popcorn?
approximately 68%
approximately 75%
approximately 95%
99.7%

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