Using data for the past 32 days, the following scatter plot and summary data has been generated. a) Assuming a linear relationship, state the simple linear regression equation for this data. b) Interpret the meaning of the slope, b1.c) Using the prediction line from (a) predict the amount of time it would take to process 150 invoices. d) Interpret the meaning of R Square, commenting on how useful you think this regression model is for predicting the completion time for processing invoices.

3. [5 Marks] The time it takes to process invoices for a large department store, and the number of invoices processed was recorded. Using data for the past 32 days, the following scatter plot and summary data has been generated. Time Taken to Process Invoices culation Time [houn] 109 200 250 350 Number of Imanices Processed OUTPUT ANDVA 187 8169 0 1350 0.1514 3.1063 40123. 9 000