Published by:
CGP EDU Academic Team
Published on: August 13, 2026
From a lot of 10 items, which include 3 defective items, a sample of 5 items is drawn at random. Let the random variable X denote the number of defective items in the sample. If the variance of X is 
, then 
is equal to______
Text Solution
Verified by ExpertsThe correct answer is:
56
(56)
denotes number of defective
x | 0 | 1 | 2 | 3 |
0 | 1 | 4 | 9 | |
0 | ||||
0 |
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