If the total number of elements with some specific characteristics is 18 from a

Question

If the total number of elements with some specific characteristics is 18 from a population of 40 and the sample is drawn without replacement with the size of 4 then the mean of hyper geometric probability distribution is

Options:

A . 4.8

B . 1.8

C . 2.8

D . 3.8

Answer: Option B
Answer: (b).1.8

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