Final answer:
To find the mean retirement age, add up all the ages and divide by the total number of employees.
Step-by-step explanation:
To find the mean retirement age of the nine employees, we need to add up all the retirement ages and then divide by the total number of employees.
Retirement ages: 50, 59, 67, 64, 62, 67, 65, 55, 62
Sum of retirement ages: 50 + 59 + 67 + 64 + 62 + 67 + 65 + 55 + 62 = 551
Mean retirement age: 551 / 9 = 61.2
Rounded to one more decimal place, the mean retirement age is 61.2. Therefore, the correct answer is 61.4 (A).