A person has undertaken a business. The probabilities are 0.80 that there will be a crisis, 0.85 that the business will be completed on time if there is no crisis and 0.35 that the business will be completed on time if there is a crisis. Determine the probability that the business will be complete on time

A person has undertaken a construction job. The probabilities are 0.65 that there will be strike, 0.80 that the construction job will be completed on time if there is no strike, and 0.32 that the construction job will be completed on time if there is a strike. Determine the probability that the construction job will be completed on time.

A 1st order reaction takes 69.3 minutes for 50 %completion. Derive an equation for determining the time needed for 80 % completion of this reaction.

A laboratory blood test is 99 % effective in detecting a certain disease when it is infact,present. However result for 0.5% of the healthy person tested (i.e.,if a healthy person is tested,then with probability 0.005, the test will imply be has the disease). If 0.1% of the population actually has the disease,what is the probability that a person has the disease given taht his test result is positive?

On complete combustion 0.2365 g of an organic compound gave 0.153 g of carbon dioxide and 0.316 g of water. Determine the percentage of carbon and hydrogen in the organic compound?