Question: a ) In a regression equation expressed as y = a + bx , how is the letter b best described? b ) How is

a) In a regression equation expressed as y= a + bx, how is the letter b best described?
b) How is the letter y in the regression equation best described?
c) How is the letter x in the regression equation best described?
d) Does the variable "machine hours" have statistical significance? Explain.?

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