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 ______.
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
Tell whether the given is certain to happen, impossible, can happen but not certain.
You are older today than yesterday.
In a simultaneous throw of a pair of dice, find the probability of getting:
neither 9 nor 11 as the sum of the numbers on the faces
In a simultaneous throw of a pair of dice, find the probability of getting:
at least once
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
the seven of clubs
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
a queen
When two dice are rolled:
Find probability of getting an odd total.
A glass jar contains 6 red, 5 green, 4 blue and 5 yellow marbles of same size. Hari takes out a marble from the jar at random. What is the probability that the chosen marble is of red colour?
When a spinner with three colours (Figure) is rotated, which colour has more chance to show up with arrow than the others?
Classify the following events:
Getting a number less than 1 on throwing a die.
Classify the following events:
Today moon will not revolve around the earth.
