Construction Planning and Management
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

2.3% and 84.1%
15.9% and 97.7%
97.7% and 84.1%
97.7 % and 15.9%

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Construction Planning and Management
Output of a bulldozer is(i) Increased if drawbar HP of the tractor is increased for a given hauling distance(ii) Decreased if drawbar HP of the tractor is increased for a given hauling distance(iii) Increased if the hauling distance is increased for a given drawbar HP of the tractor(iv) Decreased if the hauling distance is increased for a given drawbar HP of the tractor

(ii) and (iv) are correct
(i) and (iii) are correct
(i) and (iv) are correct
(ii) and (iii) are correct

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Construction Planning and Management
Batching refers to

Weighing accurately, the quantity of each material for a job before mixing
Controlling the total quantity at each batch
Controlling the quantity of each material into each batch
Adjusting the water to be added in each batch according to the moisture content of the materials being mixed in the batch

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