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How many times must a man toss a fair coin, so that the probability of having at least one head is more than 80%?

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RD SHARMA ENGLISH-BINOMIAL DISTRIBUTION -All Questions
  1. One hundred identical coins, each with probability 'p' of showing head...

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  2. A fair coin is tossed 99 times. Let X be the number of times heads occ...

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  3. How many times must a man toss a fair coin, so that the probability...

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  4. If the mean and variance of a binomial variable X are 2 and 1 respe...

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  5. A biased coin with probability p, 0 lt p lt 1, of heads is tossed unti...

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  6. about to only mathematics

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  7. If X follows a binomial distribution with parameters n=100 and p=(1)...

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  8. A fair die is tossed eight times,. The probability that a third six is...

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  9. about to only mathematics

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  10. A five-digit number is written down at random. The probability that th...

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  11. If a fair coin is tossed 9 times, find the probability of (a) exactly ...

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  12. IF the mean and the variance of a binomial distribution are 4 and 3 re...

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  13. A coin is tossed 4 times . The probability of getting atleast one head...

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  14. For a binomial variate X, if n=3\ a n d\ P(X=1)=8\ P(X=3),\ t h e n\ p...

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  15. A coin is tossed n times. The probability of getting head atleast once...

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  16. The probability of selecting a male or a female is same. If the probab...

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  17. A box contains 100 pens of which 10 are defective. What is the probabi...

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  18. Suppose a random variable X follows the binomial distribution with par...

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  19. In the probability that a person is not a swimmer is 0.3, then the pro...

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  20. Which one is not a requirement of a binomial distribution? a. There ar...

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