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Probability Tes...

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  • Question 1
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    The records of a hospital show that 10% of the cases of a certain disease are fatal. If 6 patients are suffering from the disease, then the probability that only three will die is

  • Question 2
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    Assuming that for a husband wife couple the chances of their child being a body or a girl a the same, the probability of their two children being a boy and a girl is

  • Question 3
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    The probability that a student is not a swimmer is 1/5. What is the probability that out of 5 students, 4 are swimmers

  • Question 4
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    An experiment succeeds twice as often as it fails. Find the probability that in 4 trails there will be at least three success

  • Question 5
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    The mean and variance of a binomial distribution are 6 and 4. The parameter n is

  • Question 6
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    Five coins whose faces are marked 2, 3 are tossed. The chance of obtaining a total of 12 is

  • Question 7
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    A bag contains 2 white and 4 black balls. A ball is drawn 5 times with replacement. The probability that at least 4 of the balls drawn are white is

  • Question 8
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    A coin is tossed 2n times. The chance that the number of times one gets head is not equal to the number of times one gets tail is

  • Question 9
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  • Question 10
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    A die is tossed 5 times. Getting an odd number is considered a success. Then the variance of distribution of success is

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