SOLUTION: 1) A sample of employees of Worldwide Enterprises is to be surveyed about a new health care plan. The employees are classified as follows, and each event is mutually exclusive one
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-> SOLUTION: 1) A sample of employees of Worldwide Enterprises is to be surveyed about a new health care plan. The employees are classified as follows, and each event is mutually exclusive one
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Question 1162667: 1) A sample of employees of Worldwide Enterprises is to be surveyed about a new health care plan. The employees are classified as follows, and each event is mutually exclusive one another:
Classification:-----------Event:-------------No. of Employees
Supervisors----------------A---------------------120
Maintenance---------------B---------------------50
Production-----------------C---------------------1,460
Management---------------D---------------------302
Secretarial----------------E---------------------68
(a) What is the probability that the first person selected is either in supervisors or a management?
(b) What is the probability that the first person selected is not in production?
(a) Add 120 (supervisors) and 302 (management) and relate the sum to the total employees.
(b) From the total employees, subtract 1460 (Production) and then relate the difference to the total employees.
The fact that the events are mutually exclusive MEANS that these subsets are DISJOINT (have empty intersections), which is very natural.
