A deep-foundation engineering contractor has bid on a foundation system for a new building housing the world headquarters for a Fortune 500 company. A part of the project consists of installing auger cast piles. The contractor was given bid information for cost-estimation purposes 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 contractor developed a linear regression model to estimate the actual pile length as a function of the estimated pile lengths. Use a significance level of 0.05 for all hypothesis tests and intervals. Give a point estimate for the Pile Length(ft.)-Actual for a pile with a Pile Length(ft.)- imated of 40 feet? Bivariate Fit of Pile Length (ft.)- Actual By Pile Length (ft.)-Estimated . 6 8 8 8 8 8 3 2 Pile Length (it. o 10 20 30 40 50 60 Pile Length (ft.)-Estimated Linear Fit Analysis of Variance Sum of Source DF Squares Mean Square F Ratio 52569.023 52569.0 537.7953 309 30204.481 97.7 Prob > F 310 82773.505 <.0001 parameter estimates estimate std error t ratio probalt lower upper in c.000>