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Mathematics 10 Online
OpenStudy (anonymous):

Can someone help me with this question? It's on standard deviation.

OpenStudy (anonymous):

Betty’s Bite-Size Candies are packaged in bags. The number of candies per bag is normally distributed, with a mean of 50 candies and a standard deviation of 3. At a quality control checkpoint, a sample of bags is checked, and 12 bags contain fewer than 47 candies. How many bags were probably taken as samples?

ganeshie8 (ganeshie8):

familiar with 68-95-99.7 rule ?

ganeshie8 (ganeshie8):

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