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Regression analysis

Please see the attached file.

**All work shown (step by step), in simple terms please!!!

No excel, just formulas**.

15)

Test each of the following hypotheses:
a) Ho: β = 0
Ha: β ≠ 0

b) Ho: β = 0
Ha: β < 0

c) Ho: β = 0
Ha: β > 0

16) a) If = 1.3479 + 0.3978x, what is the x value? ( = -3)

b) True or False. Regression Analysis attempts to minimize the mean square error.

Attachments

Solution Preview

Please see the attachments.

**All work shown (step by step), in simple terms please!!!

No excel, just formulas**.

15) Test each of the following hypotheses:

a) Ho: β = 0
Ha: β ≠ 0

Answer
The test Statistic used is =1.87/0.63 =2.9682
Decision rule: Reject the null hypothesis if the value of test statistic is greater than the critical value of t with n-2 d.f.

d.f=1

Critical Value ...

Solution Summary

Step by step method for regression analysis is discussed here. Regression coefficients, coefficient of determination, scatter diagram and significance of regression model are explained in the solution.

$2.19