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From the employees of a company, 5 perso...

From the employees of a company, 5 persons are selected to represent them in the managing committee of the company, Particulars of five persons are as follows:

A person is selected at random from this group to act as a spokesperson. What is the probability that the spokesperson will be either male or over 35 years?

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`(4)/(5)`
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From the employees of a company, 5 person are selected to repreent them in the managing committee of the company. Particular of five persons are as follows: {:("S.No.","Name ","sex","age in years"),(1.,"harish ",M,30),(2. , "Rohon",M,33),(3.,"sheetal",F,46),(4.,"Alis",F,28),(5. ,"Salim",M,41):} A person is selected at random from this group to act as a spokespersons. What is the probability that the spokespersons will be either male or over 35 years?

Four persons are selected at random from a group of 3 men, 2 women and 4 children. The probability that exactly two of them are children is

A committee of two persons is selected from two men and two women. What is the probability that the committee will have (a) no man? (b) one man? (c) two men?

In a certain town, 40% of the people have brown hair, 25% have brown eyes, and 15% have both brown hair and brown eyes. If a person selected at random from the town has brown hair, the probability that he also has brown eyes is 1//5 b. 3//8 c. 1//3 d. 2//3

Suppose that 5% of men and 0.25% of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.

Suppose that 5% of men and 0.25% of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.

Suppose that the reliability of a HIV test is specified as follows. Of people having HIV, 90% of the test detect the diséase but 10% go undetected. Of people free of HIV, 99% of the test judged HIV (-ve) but 1% are diagnosed as showing HIV (+ ve). From a large population of which 0.1% have HIV, one person is selected at random, given the HIV test, and the pathologist report him/her as HIV (+ve) What is the probability that the person actually has HIV?

NEW JOYTHI PUBLICATION-PROBABILITY-EXAMPLES
  1. A fair coin with 1 marked on one face and 6 on the other and a fair di...

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  2. There are four men and six women on the city council. If one council m...

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  3. In a lottery, a person choses six different natural numbers at random ...

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  4. Check whether the following probabilities P(A) and P(B) are consistent...

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  5. Events E and F are such that P(not E or not F) = 0.25, State whether E...

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  6. A and B are events such that P(A) = 0.42, P(B) = 0.48 and P(A and B) =...

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  7. In Class XI of a school 40% of the students study Mathematics and 30% ...

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  8. In an entrance test that is graded on the basis of two examinations, t...

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  9. The probability that a student will pass the final examination in both...

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  10. A box contains 10 red marbles, 20 blue marbles and 30 green marbles. 5...

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  11. 4 cards are drawn from a well - shuffled deck of 52 cards. What is the...

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  12. A die has two faces each with number '1', three faces each with number...

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  13. In a certain lottery 10,000 tickets are sold and ten equal prizes are ...

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  14. Out of 100 students, two sections of 40 and 60 are formed. If you and ...

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  15. Three letters are dictated to three persons and an envelope is address...

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  16. A and B are two events such that P(A) = 0.54, P(B) = 0.69 and P(A cap ...

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  17. From the employees of a company, 5 persons are selected to represent t...

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  18. If 4-digit numbers greater than 5,000 are randomly formed from the dig...

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  19. The number lock of a suitcase has 4 wheels, each labelled with ten dig...

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  20. A letter is chosen at random from the word 'ASSASSINATION'. Find the p...

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