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.

z1= -0.6818

z2= 0.45

Step-by-step explanation:

Mean labor cost to repair the heat pump is μ= $90

standard deviation σ= $22

Labor cost for the first heat pump X_1= $75

labor cost for the second heat pump is X_2= $100

z value for the first heat pump

⇒

= -0.6818

z value for the second heat pump

⇒

= 0.45

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.