Question: Are the following models linear regression models? Why or why not? a. Y i = e 1 + 2Xi + ui b. Y i =

Are the following models linear regression models? Why or why not?

a. Yi = eβ1 + β2Xi + ui

b. Yi = 1 / 1 + eβ1 + β2Xi + ui

c. ln Yi = β1 + β2 (1/Xi) + ui

d. Yi = β1 + (0.75-β1)e-β2(Xi-2) +ui

e. Yi = β1 + β32Xi + ui

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