Question: 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

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.

(a) Assuming a linear relationship, state the simple linear regression equation for this data.

(b) Interpret the meaning of the slope, b₁.

(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.

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