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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.

#### 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