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A coin tossed five times. What is the pr...

A coin tossed five times. What is the probability that heads are observed more than three times?

A

64

B

21

C

32

D

42

Text Solution

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The correct Answer is:
D
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DISHA PUBLICATION-PROBABILITY -2-EXERCISE - 1 : CONCEPT BUILDER
  1. A random variable X follows binomial distribution with mean alpha and ...

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  2. In a hurdle race, a player has to cross 10 hurdles. The probability t...

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  3. A coin tossed five times. What is the probability that heads are obser...

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  4. A machine is producing 4% defective products. Find the probability of...

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  5. Given two independent events, if the probability that exactly one of t...

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  6. If the probability density function of a random variable X is f(x)=x/2...

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  7. In a binomial distribution, mean is 3 and standard deviation is 3/2, t...

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  8. A random variable has the following probability distribution The ...

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  9. Probability that Priyanka will pass an exam is 'k', she appeared in 5 ...

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  10. A fair coin is tossed 99 times. If X is the number of times heads o...

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  11. In a binomial distribution B(n , p=1/4) , if the probability of at lea...

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  12. One hundred identical coins, each with probability 'p' of showing head...

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  13. A bag contains three white, two black and four red balls. If four ball...

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  14. A fair coin is tossed a fixed number of times. If the probability of g...

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  15. A boy is throwing stones at a target. The probability of hitting the t...

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  16. A pair of fair dice is thrown independently three times. The probab...

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  17. There is 30% chance that it rains on any particular day. What is the p...

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  18. Consider the following statements I : An experiment succeeds twice a...

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  19. The mean and variance of a random variable X having a binomial distrib...

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  20. The number of events of the binomial distribution for which mean and s...

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