Given : A box contains 16 bulbs, out of which 4 bulbs are defective. Three bulbs are drawn at random
To find : mean (μ) and variance (σ2)
Formula used :
A box contains 16 bulbs, out of which 4 bulbs are defective. Three bulbs are drawn at random
Let X denote the number of defective bulbs drawn
There are 4 defective bulbs present in 16 bulbs
The probability distribution table is as follows,