59) The probability of completion of any activity within its expected time is

60) If the scheduled completion time of a project is more than the earliest expected time for completion of the project, then the probability of completion of the project within the scheduled completion time will be

61) If the expected time for completion of a project is 10 days with a standard deviation of 2 days, the expected time of completion of the project with 99.9% probability is

62) If the expected time of completion of a project is 60 weeks with a standard deviation of 5 weeks, the probability of completing the project in 50 weeks and 65 weeks respectively will be

63) A tractor shovel has a purchase price of Rs. 4.7 lacs and could save the organization an amount of rupees one lac per year on operating costs. The salvage value after the amortization period is 10% of the purchase price. The capital recovery period will be