Answer:
Following are the responses to the given question:
Step-by-step explanation:
Mean Absolute Deviation MAD
Mean squared error
linear trend equation is 

Naive method

Please find the attached file.
Y coordinates control up and down
increase by 8 means go up by 8
8 units up
-(3/4) (12)+1 = -9+1=. -8
9514 1404 393
Answer:
5.8496 min
Step-by-step explanation:

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Modern calculators can perform integration with high accuracy. This one gives the same result.