The sаlаries аt a cоrpоratiоn are normally distributed with an average salary of $19,000 and a standard deviation of $4,000.What is the probability that an employee will have a salary between $12,520 and $13,480?What is the probability that an employee will have a salary more than $11,880?What is the probability that an employee will have a salary less than $28,440?