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# a deep foundation engineering contractor has bid on a foundation system for a new world headquarters building for a fortune 500 company.

a deep foundation engineering contractor has bid on a foundation system for a new world headquarters building for a fortune 500 company. A part of the project consists of installing 311 auger cast piles. The contractor was given bid information for cost-estimating pruposes which consisted of the estimated depth of each pile; however actual drill footage of each pile could not be determined exactly until construction was performed. The Excel file Pile Foundation contains the estimates and actual pile lengths after the project was completed. Use the function polyfit in MAtlab to develop an approximation that will best fit the data. The estimated actual pile length will be a function of the estimated pile lengths.