TABLE 12-12
The manager of the purchasing department of a large savings and loan organization would like to develop a model to predict the amount of time (measured in hours) it takes to record a loan application. Data are collected from a sample of 30 days, and the number of applications recorded and completion time in hours is recorded. Below is the regression output:

Note: 4.3946E-15 is 4.3946 x 10-15.

-Referring to Table 12-12, the degrees of freedom for the F test on whether the number of loan applications recorded affects the amount of time are ________.
A) 1, 28
B) 1, 29
C) 28, 1
D) 29, 1

Question

TABLE 12-12
The manager of the purchasing department of a large savings and loan organization would like to develop a model to predict the amount of time (measured in hours) it takes to record a loan application. Data are collected from a sample of 30 days, and the number of applications recorded and completion time in hours is recorded. Below is the regression output:
  
Note: 4.3946E-15 is 4.3946 x 10-15.

-Referring to Table 12-12, the degrees of freedom for the F test on whether the number of loan applications recorded affects the amount of time are ________.
A) 1, 28 
B) 1, 29 
C) 28, 1 
D) 29, 1

Quizplus · Accepted Answer

The degrees of freedom for the F test in a simple linear regression are (1, n-2), where n is the number of observations. If there are 30 observations, the degrees of freedom would be (1, 28).

TABLE 12-12 The Manager of the Purchasing Department of a Large Savings