probability ,sample space, tree diagram, classical probability ,subjective probability, frequency

A box contains a certain number of computer parts, a few of which are defective. Two parts are selected at random from this box and inspected to determine if they are good or defective.
How many total outcomes are possible? Draw a tree diagram for this experiment.

A financial expert believes that the probability is .13 that the stock price of a specific technology company will double over the next year. Is this a case of classical, relative frequency, or subjective probability? Explain why.

A hat contains 40 marbles. Of them, 18 are red and 22 are green. If one marble is randomly selected out of this hat, what is the probability that this marble is a- red? b- green?
A sample of 400 large companies showed that 130 of them offer free health fitness centers to their employees on the
company premises. If one company is selected at random from this sample,

what is the probability that this company offers a free health fitness center to its employees on the company
premises?
What is the probability that this company does not offer a free health fitness center to its employees on the company premises?
Do these two probabilities add up to 1.0? If yes, why?