Home
Class 12
MATHS
If the probability that a fulurorescent ...

If the probability that a fulurorescent light has a useful life of a least 800 hours is 0.9 find the probability that among 20 such lights at least 2 will not have a useful life of at least 800 hours. [ Given `(0.9) = 0.1348 ] `

Text Solution

Verified by Experts

The correct Answer is:
0.60908
Promotional Banner

Topper's Solved these Questions

  • BINOMIAL DISTRIBUTION

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise MULTIPLE CHOICE QUESTIONS|8 Videos

  • BINOMIAL DISTRIBUTION

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise MULTIPLE CHOICE QUESTIONS|8 Videos

  • APPLICATIONS OF DERIVATIVES

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise MULTIPLE CHOICE QUESTIONS|12 Videos

  • CONTINUITY

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise MULTIPLE CHOICE QUESTIONS|6 Videos

Similar Questions

Explore conceptually related problems

The probability that the life of a bulb is 100 days is 0.05. Find the probability that out of 6 bulbs (i) atleast 1 (ii) greater than 4 (iii) none will be having a life of 100 days

If the probability that a man aged 60 will live to be 70 is 0.65 what is the probability that out of 10 men now 60 at least 8 will live to be 70 ?

The probability of hitting a target in any shot is 0.2 If 10 shorts are fired , find the probability that the target will be hit at least twice. [ Given: (0.8)^9= 0. 1342]

If the chance of a gushot hitting a target is 0.2 then the probability that at least 2 shots out of 10 will hit the target is

The probability that a bulb produced by a factory will fuse after 6 months of use is 0.05 . Find the probability that out of 5 such bulbs (i) none will fuse after 6 months of use (ii) at least one will fuse after 6 months of use (iii) not more than one will fuse after 6 months of use.

The probability that a bulb produced by a factory will fuse after 150 days of use is 0.05 . Find the probability that out of 5 such bulbs (i) none (ii) not more than one (iii) more than one (iv) at least one will fuse after 150 days of use.

The probabilities that a student will solve Question A and Question B are 0.4 and 0.5 respectively. What is the probability that he solves at least one of the two questions ?

The probability that a bulb produced by a factory will fuse after 150 days of use is 0.05. Find the probability that out of 5 such bulbs : (i) none (ii) none more than one (iii) more than one (iv) at least one will fuse after 150 days of use.

The probability of happening an event A in one trial is 0.4. Find the probability that the event A happens at least one in three independent trials.