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

Multiple Choice

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 90% confidence interval for the mean change in the amount of time needed as a result of recording one additional loan application is

A) wider than [0.1492, 0.6555].
B) narrower than [0.1492, 0.6555].
C) wider than [0.0109, 0.0143].
D) narrower than [0.0109, 0.0143].