The experiment data inbelow table was to evaluate the effects of three variables on invoice errorsfor a company. Invoice errors had been a major contributor to lengthening thetime that customers took to pay their invoices and increasing the accountsreceivables for a major chemical company. It was conjectured that the errorsmight be due to the size of the customer (larger customers have more complexorders), the customer location (foreign orders are more complicated), and thetype of product. A subset of the data is summarized in the following Table. Table: Invoice Experiment ErrorCustomer SizeCustomer LocationProduct TypeNumber of Errors—16+–19-+-4++-2–+21+-+25-++15+++20Customer Size: Small (-), Large (+)Customer Location: Foreign (-), Domestic (+)Product Type: Commodity (-), Specialty (=)Reference: Moen, Nolan, and Provost (R. D.Moen, T. W. Nolan and L. P. Provost. ImprovingQuality through Planned Experimentation. New York: McGraw-Hill, 1991)Use the date in table above and answer thefollowing questions in the space provided below:1. Whatis the nature of the effects of the factors studied in this experiment? 2. Whatstrategy would you use to reduce invoice errors, given the results of thisexperiment?