Find the equation of the least-squares regression line. Graph the line and data points on the same graph.Two different tests are designed to measure employee productivity and dexterity. Several employees are randomly selected and tested with these results.
A. y = 2.36 + 2.03x
B. y = 75.3 - 0.329x
C. y = 5.05 + 1.91x
D. y = 10.7 + 1.53x
Answer: C
Mathematics
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Evaluate the expression for the given replacement values. Write the answer in simplest form.x - y for x = 
, y = 
A. 
B. 
C. 
D. 
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Solve the equation. Round your answer to the nearest tenth. 2x + 
= 
A. -0.3 B. -1.2 C. -1.9 D. -1.5
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Write an equation for the ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Simplify. Write the answer as a mixed number as needed.
2 + 
2
A. 7
B. 20
C. 22
D. 5
Mathematics