Advertisements
Advertisements
Question
Rohit collected the data regarding weights of students of his class and prepared the following table:
| Weight (in kg) | 44 – 47 | 48 – 51 | 52 – 55 | 56 – 60 |
| Number of Students | 3 | 5 | 25 | 7 |
A student is to be selected randomly from his class for some competition. The probability of selection of the student is highest whose weight is in the interval ______.
Advertisements
Solution
A student is to be selected randomly from his class for some competition. The probability of selection of the student is highest whose weight is in the interval 52 – 55.
We know that,
Probability = `"Number of favourable outcomes"/"Total number of possible outcomes"`
∴ To make the probability highest, we have to take the interval where number of students, i.e. possible outcomes are highest.
Here, the probability is highest whose weight is in the interval
APPEARS IN
RELATED QUESTIONS
List the outcomes you can see in this experiment.
Tossing two coins together
When a die is thrown, list the outcome of an event of getting a number greater than 5.
In a simultaneous throw of a pair of dice, find the probability of getting:
a doublet
In a simultaneous throw of a pair of dice, find the probability of getting:
a sum less than 6
In a simultaneous throw of a pair of dice, find the probability of getting:
a number other than 5 on any dice.
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
a red card
A bag contains 5 red marbles, 8 white marbles, 4 green marbles. What is the probability that if one marble is taken out of the bag at random, it will be
white
The probability of an event which is certain to happen is ______.
The probability of an event which is impossible to happen is ______.
A coin is tossed 15 times and the outcomes are recorded as follows:
H T T H T H H H T T H T H T T. The chance of occurrence of a head is 50 per cent.
