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20 May, 22:10

A certain company has five departments, A, B, C, D, and E. The number of employees in each department is 10, 10, 20, 30, and 30, respectively. A sample of 10 employees from all employees will be selected. Of the following descriptions of sampling procedures, which is most likely to introduce a potential source of bias?

Randomly select 10 employees from department C

A

Randomly select 10 employees from all 100 employees

B

Randomly select 2 employees from each of the five departments

C

Randomly select 1 employee from each of A and B, 2 employees from C, and 3 employees from each of D and E

D

Randomly select every tenth employee from a randomized list of names of all employees

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Answers (1)
  1. 21 May, 02:00
    0
    There is more source of bias in B and E

    Step-by-step explanation:

    in case A:

    we have to choose 10 employees from 20 employees of C

    therefore number of ways = 20c10

    in case B:

    we have to choose 10 employees from 100 employees therefore no of ways = 100c10

    in case C:

    we have to choose 2 from each of the departments therefore no of ways = 10c1*10c1*20c2*30c2*30c2

    in case of D:

    we have to choose 1 from A and B 2 from C and 3 from each of D and E

    therefore no of ways = 10c1*10c1*20c2*30c3*30c3

    in case of E:

    we have to choose 10 from 100 employees therefore no of ways = 100c10

    since we have case B and D greater than every other case we have modt chance of bias in case of B and D
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