# statistics

posted by .

company A has 110 employed, company B has 750 employed and company C has 250 employed. Compute the probability that an employee selected at random comes from company A or B.

• statistics -

Size of set A = |A| = 110,
similarly |B|=750, |C|=250
Size of Ω, sample space, S = |A|+|B|+|C|=1110

Random selection from equi-probability sample would be
P(A or B)=P(A)+P(B)=(|A|+|B|)/S

## Similar Questions

1. ### Human resources management

17. Andy Liu is employed by National Electronics Company. He works on a team that manufactures the company’s best-selling TV from start to finish. Andy belongs to a _______ team. A. self-directed C. process-improvement B. project …
2. ### geography

what kinds of geographer might be employed by a manufactering company?
3. ### math

company A:1/5 company B:4/25 company C:2/5 company D:3/20 how much more than company A's fraction of the market did company C have?
4. ### m/c

A researcher is hired by a company to ascertain the morale of company employees. The company employs over 10,000 employees. The researcher takes a random sample of 237 employees, interviews each sampled employee, and uses the information …
5. ### Tax

When you are the boss of a company, does that mean you are self-employed?
6. ### economics

The Acme Machinery Company is a closed shop. This means that: A.union members are not employed. B.only union members are employed. C. both union and nonunion members are employed D. the company boycotts union-made products. E.
7. ### statistics

In a study of the effect of college student employment on academic performance, the following summary statistics for GPA were reported for a sample of students who worked and for a sample who did not work.( university of central florida …
8. ### statistics

Can you help me with this statistics problem?
9. ### math

2) In a certain instant lottery game, the chances of a win stated as "3 in 23". Express the indicated degree of likelihood as a probability value between 0 and 1 3) A certain company reduced its management staff from 20 managers to …
10. ### Probability and Statistics

In a toy manufacturing company three machines A,B and C are employed to manufactures toys. Machines A, B and C manufacture 20%, 30% and 50% of the total toys respectively. A quality control officer examined the machines and found that …

More Similar Questions