# Probability Distribution and Computing Z Values

I'm not sure how to resolve this:

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 completed repairs on two heat pumps this morning. The labor cost for the first is $75 and it was $100 for the second. Compute Z values for each and comment on your findings.

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A recent article in the Cincinnati Enquirer reported that the mean labor cost to repair a heat pump is $90 with a ...

#### Solution Summary

This solution provides calculations and explanations for computing Z values.

$2.19