Home
Class 12
MATHS
If the probability that a fluorescent li...

If the probability that a fluorescent ligth has a usefule life of at least 600 hours is 0.9 , find the probabilities that amond 12 such lights.
(i) exactly 10 will have a useful life of at least 600 hours ,
(ii) at least 11 will have a useful life of at least 600 hours ,
(iii) at least 2 will not have a useful life of at least 600 hours

Promotional Banner

Topper's Solved these Questions

  • PROBABILITY DISTRIBUTIONS

    FULL MARKS|Exercise EXERCISE -11.6|20 Videos

  • PROBABILITY DISTRIBUTIONS

    FULL MARKS|Exercise Additional Problems|27 Videos

  • PROBABILITY DISTRIBUTIONS

    FULL MARKS|Exercise EXERCISE -11.4|7 Videos

  • ORDINARY DIFFERENTIAL EQUATIONS

    FULL MARKS|Exercise ADDITIONAL PROBLEMS|40 Videos

  • SAMPLE PAPER - 1

    FULL MARKS|Exercise PART-IV (Answer the questions)|14 Videos

Similar Questions

Explore conceptually related problems

If the probability that fluoreacent light has a useful life of at least 600 hours is 0.9 find the probabilites that among 12 such lights exactly 10 will have a usefull life of at least 600 hours

If the probability that fluoreacent light has a useful life of at least 600 hours is 0.9 find the probabilites that among 12 such lights at least 11 will have a useful life of at least 600 hours

If the probability that fluoreacent light has a useful life of at least 600 hours is 0.9 find the probabilites that among 12 such lights at least 2 will not have a useful of at least 600 hours

The probability that Mr. Q hits a target at any trial is 1/4 . Suppose he tries at the target 10 times. Find the probability that he hits the target (i) exactly 4 times (ii) at least one time.