Final answer:
In an insurance office with 70 employees where 56 have cellular phones, the portion with phones is 80% (0.8), and the portion without phones is 20% (0.2).
Step-by-step explanation:
When an insurance office has 70 employees and 56 of them have cellular phones, we can calculate:
(a) The portion of the employees who have cellular phones
The portion is found by dividing the number of employees with phones by the total number of employees:
Portion with phones = number with phones / total number of employees
= 56 / 70
= 0.8 or 80%
(b) The portion of the employees who do not have cellular phones
To find this, subtract the portion with phones from 1 (or 100%):
Portion without phones = 1 - portion with phones
= 1 - 0.8
= 0.2 or 20%