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An experiment succeeds twice as often as...

An experiment succeeds twice as often as it fails. Then find the probability that in the next 6 trials, there will be at least 4 sucesses.

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RD SHARMA ENGLISH-BINOMIAL DISTRIBUTION -All Questions
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  2. It is known that 60% of mice inoculated with a serum are protected fro...

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  3. An experiment succeeds twice as often as it fails. Then find the proba...

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  4. In a hospital, there are 20 kidney dialysis machines and that the ch...

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  5. In an examination, 20 questions of true-false type are asked. Suppo...

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  6. Suppose X has a binomial distribution B(6,""""1/2) . Show that X" "=" ...

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  7. On a a multiple choice examination with three possible answers for e...

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  8. A person buys a lottery ticket in 50 lotteries, in each of which his ...

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  9. The probability of a shooter hitting a target is 3/4 . How many minimu...

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  10. How many times must a man toss a fair coin so that the probability of ...

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  11. How many times must a man toss a fair coin so that the probability o...

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  12. A pair of dice is thrown 5 times. If getting a doublet is considered a...

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  13. From a lot of 30 bulbs which include 6 defectives, a sample of 4 bu...

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  14. Find the expectation of the number of heads in 15 tosses of a coin.

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  15. Can the mean of a binomial distribution be less than its variance?

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  16. Determine the binomial distribution whose mean is 9 and variance 6.

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  17. If the mean and variance of a binomial distribution are respectively 9...

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  18. If the sum of the mean and variance of a binomial distribution for 5 ...

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  19. Determine the binomial distribution whose mean is 20 and variance 16.

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  20. The mean of a binomial distribution is 20, and the standard deviation ...

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