the manager of the purchasing department of a large saving 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. attached below is the regression output. what are the degrees of freedom for the f test on whether the number of load applications recorded affects the amount of​ time?