Home
Class 12
MATHS
If a box has 100 pens of which 10 are de...

If a box has 100 pens of which 10 are defective, then what is the probability that out of a sample of 5 pens drawn one by one with replacement atmost one is defective?

A

`((9)/(10))^5`

B

`1/2((9)/(10))^4`

C

`1/2((9)/(10))^4`

D

`((9)/(10))^5+1/2((9)/(10))^4`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

As box contains 100 pens of which 10 are defective.What is the probability that out of a sample of 5pens drawn one by one with replacement at most one is defective? ((9)/(10))^(5) b.(1)/(2)((9)/(10))^(4) c.(1)/(2)((9)/(10))^(5)d((9)/(10))^(5)+(1)/(2)((9)/(10))^(4)

A box has 20 pens of which 2 are defective. Calculate the probability that out of 5 pens drawn one by one with replacement,at most 2 are defective.

In a box containing 100 bulbs, 10 are defective. What is the probability that out of a sample of 5 bulbs, (i) none is defective and (ii) exactly 2 are defective ?

In a box containing 100 eggs 10 eggs are roten the probability that out of a sample of 5 eggs, none is rotten (if the sampling is with replacement)

In a box containing 60 bulbs 6 are defective . What is the probability that out of a sample of 5 bulbs (i) none is defective (ii) exactly 2 are defective ?

If 1 pen is selected from a batch of 500 pens of which 50 are defective, then probability that it is non-defective is

There are 5% defective items in a large bulk of items.What is the probability that a sample of 10 items will include not more than one defective item?

In a box containg 100 bulbs , 64 are defective probabaility that in a sample of 5 bulbs ,none is defective , is