Math, asked by BrainlyHelper, 1 year ago

Question 9 Note the frequency of two-wheelers, three-wheelers and four-wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler.

Class 9 - Math - Probability Page 285

Answers

Answered by nikitasingh79
69

Probability is the study of the chances of events happening.

Event:

A Possible outcome or combination of outcomes is called event.

The probability of happening our event always lies from 0 to 1.

The sum of all the probabilities of all possible outcomes of an experiment is 1.

 

Required probability=number of trials in which the event E has happened/Total number of trials

-----------------------------------------------------------------------------------------------------

Solution:

After observing in front of the school gate from time interval 6:30 to 7:30 A.M the respective frequencies of different types of vehicles are:

Two wheelers =550

3 wheelers= 250

Four wheelers=80


The total number of vehicles = 550 + 250 + 80 = 880

Number 0f two wheelers=550

Hence, probability of observing two wheelers=number of two wheelers/total number of vehicles= 550/880=5/8

Probability of observing two wheelers, P(2 Wheelers)= 5/8


==========================================================

Hope this will help you...

Answered by jiyasinha15092007
10

Answer:

Lets assume a case:

Number of 2 wheelers passed =18

Number of 3 wheelers passed =23

Number of 4 wheelers passed =19

The time interval is 15 minutes for all the 3 conditions.

Total number of vehicles passed = Number of 2 wheelers + Number of 3 wheelers + Number of 4 wheelers

=18+23+19=60

Probability that one vehicle out of total vehicles is 2 wheelers =

60

18

=

10

3

Step-by-step explanation:

plz mark me as brainliest answer

Similar questions