Question

In a simple linear regression, the following information is given:

x−x− = −39; y− y−⁢  = 40;

Σ(xi−x− )(yi− y−)= −840;Σ(xi−x− )(yi⁢− y−)= −840;

Σ(xi− x−)2= 718Σ(xi⁢− x−)2⁢= 718

a.	Calculate b1. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.)

b1

b.	Calculate b0. (Round intermediate calculations to 4 decimal places and final answer to 2 decimal places.)

b0

c-1.	What is the sample regression equation? (Negative value should be indicated by a minus sign. Round your answers to 2 decimal places.)

yˆ=y^=    +  x

c-2.	Predict y if x equals −33. (Round intermediate coefficient values and final answer to 2 decimal places.)

yˆ=y^=

Answer 1