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

the answer is 9.8975

explanation:

when you multiply the "39.59" with the 25% it reduces it and shows its final discounted price. hope this !

step-by-step explanation:

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.