Assignment:You are asked by the project manager to calculate an estimate pouring the foundation of an office building. Realistically, it should take four days since that is what your company routinely accomplishes on buildings with similar size. Optimistically though it could be done in a little as two if everything goes just right. Pessimistically though, it has taken as long a ten, mostly due to poor weather conditions or equipment issues at similarly remote sites. Using the formula of Time Estimate in the attachment , Calculate the time estimate for this one activity.Show your complete work with formulas and equation ( caluculations).