Question: Consider the following data set for an office structure built by Anderson Construction Co. The completed building is nine stories. However, construction was interrupted by a fire after 5.3357 floors were completed. At the time of the fire, Anderson had used 54,067 hours of labor to construct the first 5.3357 stories of the building. It then took Anderson an additional 40,750 labor hours to complete this nine-story building.

In this problem, FLRCOM is the number of floors completed, and HOURS is cumulative labor hours to complete the number of floors given by FLRCOM.

Enter the data for FLRCOM and HOURS in Minitab and use one command to create a variable which is the square of FLRCOM. Call this new variable FLRCOMSQ. Print HOURS, FLRCOM, and FLRCOMSQ.

Test whether there is a nonlinear relationship between HOURS and floors completed in the equation:

HOURS = a + b(FLRCOM) + c(FLRCOMSQ)

Graph the foregoing equation. Where does it reach a maximum?

Assume that the fire caused construction to slow down and caused a reduction in efficiency in completing the building. Estimate the number of labor hours needed to complete the building if there were no slow down related to the fire. Assume that the relationship that existed between FLORCOM and HOURS before the fire would have continued to exist to the completion of the building had the fire not occurred.

Estimate the extra labor hours traceable to the fire. Finally, calculate a 50% confidence interval estimate for hours if there were no fire (i.e., calculate an interval for hours to within a reasonable degree, to use a legal term, "of statistical certainty").

Price: $2.99

Solution: The downloadable solution consists of 5 pages
Deliverable: Word Document