NOVA       df SS Regression 3 45.9634 Residual 11 2.6218 Total

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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A student used multiple regression analysis to study how family spending (y) is influenced by income (x1), family size (x2), and additions to savings (x3). The variables yx1, and x3 are measured in thousands of dollars. The following results were obtained.

 

 

ANOVA

 

 

 

df

SS

Regression

3

45.9634

Residual

11

2.6218

Total

 

 

 

 

Coefficients

Standard Error

Intercept

0.0136

 

x1

0.7992

0.074

x2

0.2280

0.190

x3

-0.5796

0.920

 

 

  1. Carry out a test to determine whether y is significantly related to the independent variables. Use a 5% level of significant 
  2. Carry out a test to see if x3 and y are significantly related. Use a 5% level of significance.
Expert Solution
Step 1

Given that,

Statistics homework question answer, step 1, image 1

Step 2

Statistics homework question answer, step 2, image 1

Step 3

Statistics homework question answer, step 3, image 1

Step 4

Statistics homework question answer, step 4, image 1

Step 5

The p-value is less than the level of significance 0.05.

So, we reject the null hypothesis.

Thus, we conclude that the variable y is significantly related to the independent variables. 

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