Could you please help me correct the wrong answer? Thank you.

Multiple Regression Ginnian and Fitch, a regional accounting firm, performs yearly audits on a number of different for-profit and not-for-profit entitles. Two years ago, Luisa Mellina, Ginnian's partner in charge of operations, became concerned about the amount of audit time required by not-for-profit entities. As a result, she instituted a serles of training programs focusing on the auditing of not-for-profit entities. Now, she would like to see if the training seemed to work. So, she ran a multiple regression on 22 months of data for Ginnian for three variables: the total monthly cost of audit professional time, the number of not-for-profit audits, and the hours of training in the audit of not-for-profit entities. The following printout was obtained: t for Ho Pr> t 0.0001 0.0050 0.0250 Standard Error of Parameter 345.00 27.45 Parameter=0 Parameter Intercept Number of not-for-profit audits Hours of training R2 0.79 Se12,030 Observations: 22 Estimate 286,700 790 -45.50 70.00 3.60 5.13