Question: The following two-way contingency table gives the breakdown of the population of adults in a particular locale according to employment type and level of life insurance:
An adult is selected at random. Find each of the following probabilities.
a. The person has a high level of life insurance.
b. The person has a high level of life insurance, given that he does not have a professional position.
c. The person has a high level of life insurance, given that he has a professional position.
d. Determine whether or not the events "has a high level of life insurance" and "has a professional position" are independent.