Q3 of 55 Page 623

A survey of 200 persons of a locality shows the liking and disliking of tea.











No of persons who like tea



148



No of persons who dislike tea



52



Out of these one was chosen at random. What is the probability that the chosen person likes tea?

Total number of persons: 200


Number of persons who like tea: 148


Number of persons who dislike tea: 52


Probability P() =


Let p(Tea) be probability of person who like tea


P (Tea) =


P (Tea) = =

More from this chapter

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1

A coin is tossed 100 times with following outcomes:

Head 43 times and tail 57 times.


In a single throw of a coin, what is the probability of getting a head?

 2

A coin is tossed 200 times with following outcomes:

Head 112 times and tail 88 times.


In a single throw of a coin, what is the probability of getting a head?

 4

In a locality, 1000 families were chosen at random and the following data was collected:



















Number of children in each family



0



1



2



3



4 or more



Number of families



6



184



672



127



11



Out of these families, a family was chosen at random. What is the probability that the chosen family has 2 children?

 5

The table given below shows the month of birth of 36 students of a class:

































Month of birth



Jan.



Feb.



March



April



May



June



July



Aug.



Sep.



Oct.



Nov.



Dec.



No. of students



4



3



5



0



1



6



1



3



4



3



4



2



A students is chosen at random from the class. What is the probability that the chosen student was born in October?