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From a lot of 30 bulbs which include 6 d...

From a lot of 30 bulbs which include 6 detective, a sample of 4 balls is drawn at random with replacement. Find the probability distribution of the number of defective bulbs.

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The correct Answer is:
` = (1)/(625)`
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Knowledge Check

  • A bag contains 3 black and 4 white balls. Two balls are drawn one by one at random without replacement. The probability that second drawn ball is white is

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    `1/21`
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  • Two numbers are chosen from [1,2,3,4,5,6] one after another without replacement . Find the probability that one of the smaller value of two is less than 4 :

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    `1/15`
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    (i) A lot of20 bulbs sontains 4 defective ones. One bulb is drawn at random from the lot. What is the probability that this bulb is defective? (ii) Suppose the bulb drawn in (i) is not defective and is not replaced. Now one bulb is drawn at random from the rest. What is the probability that this bulb is not defective?

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