Please help explain the question below:

The speed with which utility companies can resolve problems is very important. The Georgetown Telephone Company (GTC), reports that it can resolve customer problems the same day they are reported in 67% of the cases. Suppose that the 17 cases reported today are representative of all complaints. a-1. How many of the problems would you expect to be resolved today? (Round the final answer to 2 decimal places.) Number of Problems a-2. What is the standard deviation? (Round the final answer to 4 decimal places.) Standard Deviation |:| b. What is the probability that 12 of the problems can be resolved today? (Round the final answer to 4 decimal places.) Probability c. What is the probability that 12 or 13 of the problems can be resolved today? (Round the final answer to 4 decimal places.) Probability d. What is the probability that more than 12 of the problems can be resolved today? (Round the final answer to 4 decimal places.) Probability