Explanation
Correct answer: B.
Choice B is correct. In total, there are people in the Human Resources department. Of those , have a master's degree as their highest level of education. Therefore, the probability of an employee selected at random from the Human Resources department having a master's degree is , which simplifies to .
Desmos solution:
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice A
Choice A is incorrect; it is the probability that an employee selected at random from either department will be in the Human Resources department and have a master's degree.
Choice C
Choice C is incorrect; it is the probability that an employee with a master's degree selected at random will be in the Human Resources department.
Choice D
Choice D is incorrect; it is the probability that an employee selected at random from either department will have a master's degree.