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A lot has 10% defective items. Ten items are chosen randomly from this lot. The probability that exactly 2 of the chosen items are defective is 
  • a)
    0.0036  
  • b)
    0.1937  
  • c)
    0.2234  
  • d)
    0.3874 
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A lot has 10% defective items. Ten items are chosen randomly from this...
Let A be the event that items are defective and B be the event that items are non-defective. 
∴ P(A) = 0.1 and P(B) = 0.9
∴ Probability that exactly two of those items are defective
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Community Answer
A lot has 10% defective items. Ten items are chosen randomly from this...
Let A be the event that items are defective and B be the event that items are non-defective. 
∴ P(A) = 0.1 and P(B) = 0.9
∴ Probability that exactly two of those items are defective
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A lot has 10% defective items. Ten items are chosen randomly from this lot. The probability that exactly 2 of the chosen items are defective isa)0.0036 b)0.1937 c)0.2234 d)0.3874Correct answer is option 'B'. Can you explain this answer?
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