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A bowler with a 210 average tries a new technique that he hopes will raise his scores. A sample of 35 games with the new

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A bowler with a 210 average tries a new technique that he hopes will raise his scores. A sample of 35 games with the new technique showed a mean score of 215 and a standard deviation of 3.6... Using d =.05, determine if the new technique is working

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