For the prostate data of Chapter 3, carry out a best-subset linear regression analysis, as in Table 3.3 (third column from left). Compute the AIC, BIC, five- and tenfold cross-validation, and bootstrap .632 estimates of prediction error. Discuss the results.
1. Draw the PERT diagram and determine the expected duration and the critical path.
2. Using simulation, assume the time required to complete a path is normally distributed. Determine the probability of being able to start your first job within 180 days.
3. To provide an allowance for unforeseen problems, you want to present your banker with an operations start time based on a 95% confidence. How many days from receipt of the loan will you tell the banker to expect you to start your first job?