ompute the A recent article in the Cincinnati Enquirer reported that the mean labor cost to...

  

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ompute the A recent 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 com- pleted 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 prob- ability distribution. Compute z values for each and comment on your findings. ompute the A recent 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 com- pleted 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 prob- ability distribution. Compute z values for each and comment on your findings.

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To compute the zvalues for the labor costs of repairing the two heat pumps we use the formu... View the full answer