Mathematics, 17.12.2019 06:31 christheicebear
Arecent article in the cincinnati enquirer reported that the mean labor cost to repair a heat pump is $90 with a standard deviation of $22. monte’s plumbing and heating service completed repairs on two heat pumps this morning. the labor cost for the first was $75 and it was $100 for the second. assume the distribution of labor costs follows the normal probability distribution. compute z values for each.
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