Saved Help Save 5 Assume that there are 20 homes in the Quail Creek area and four of them have a security system. Three homes are selected at random: a. What is the probability all three of the selected homes have a security system? (Round the final answer to 4 decimal places.) Probability 01:56:09 b. What is the probability none of the three selected homes has a security system? (Round the final answer to 4 decimal places.) Probability c. What is the probability at least one of the selected homes has a security system? (Round the final answer to 4 decimal places.) Probability d. Did you assume the events to be dependent or independent? (Click to select) v