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The sales manager gathered information on the numbers of sales calls made and the number of copiers sold for a random sample of sales representative.

The sales manager gathered information on the numbers of sales calls made and the number of copiers sold for a random sample of sales representative. Is there a positive correlation between calls made and copiers sold? Test at the 0.10 level of significance. Determine the 95% prediction interval for 65 number of calls made. *

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