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    Computing z values

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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 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. Compute z values for each and comment on your findings.

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    https://brainmass.com/statistics/dispersion-and-spread-of-data/computing-z-values-65151

    Solution Summary

    This solution explains the calculation of z values.

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