Elaine gets quiz grades of 67, 64, and 87. She gets a 84 on her final...

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sol 1 Find weighted Catex mean (ū ) 67 64 IS 15.1 15 55 04 13 Ex.w 67 * 0.15 +64 * 0.15 t 87*0.15 +84 * 0.55 option (3) is co

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