Mathematics, 11.10.2019 02:30 kbrook12

Quality control is an important issue at acme company which manufacturers light bulbs. in order to conduct testing of the life hours of their light bulbs, they randomly sampled nine light bulbs and measured how many hours they lasted: 378, 361, 350, 375, 200, 391, 375, 368, and 321. what is the variance?

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