please answer the questions for me. thanks... make sure to answer the six question.

QUESTION 1

Write the regression model for problem 21 on page 510

QUESTION 2

Write the regression model for problem 22 on page 510

QUESTION 3

Write just the regression model for problem 14 on page 579

QUESTION 4

Write just the regression model for problem 15 on page 566.

QUESTION 5

The error terms are ______________ in the probabilistic sense.

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QUESTION 6

The error terms have a __________ probability distribution.