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Answer variants:
9.75
570
569
571
12.75
10.75
1. The arithmetic mean of 8 observations is 95. If each observation is multiplied by 6, then the new arithmetic mean for the new set of values is .
2. The arithmetic mean of 5 observation is 86. If each observation is divided by 8, then the new arithmetic mean for the new set of values is .
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