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Home /Doubts and Solutions/CBSE/Class 9/Mathematics/Probability/Problems On Empirical Probability

Problems On Empirical Probability Free Doubts and Solutions

CBSE - IX - Mathematics - Probability

Three dice are thrown simultaneously. The probability of getting a total of atleast 5 of the numbers appearing on their tops is?

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CBSE - IX - Mathematics - Probability

WHAT IS THE PROBABILITY THAT AN ORDINARY YEAR HAS 53 MONDAY ?

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CBSE - IX - Mathematics - Probability

1+1

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CBSE - IX - Mathematics - Probability

when udar purchased an item online froma australia for AUD 350.00,the exchange rate wasc 1000 INR for aud 17.50. udars bank charged him 1.5% for the transaction.
 

Asked by thomassubin32 1st September 2014, 9:11 PM
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CBSE - IX - Mathematics - Probability

Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes: Outcome 3 Heads 2 Heads 1 Head No Head Frequency 23 72 77 28 From the above data, find the probability of getting (i) 2 heads, (ii) 2 tails, (iii) 3 tails.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Probability

A coin is tossed simultaneously for a number of times. The ratio of number of heads obtained to the number of tails obtained is 4: 5. What is the probability of getting a head in the next throw?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Probability

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CBSE - IX - Mathematics - Probability

In the past 50 cricket matches between two teams A and B, team A had won 29 matches. What is the experimental probability that in the next cricket match between the two teams, team A will lose?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 13th December 2013, 3:16 AM
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CBSE - IX - Mathematics - Probability

Sita says that in word MADAM, the probability of letter M is equal to that of letter A. Is she right? What value it represents?

Asked by Topperlearning User 13th December 2013, 3:06 AM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 13th December 2013, 3:01 AM
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CBSE - IX - Mathematics - Probability

A die is rolled 70 times such that an even number occurred 46 times and an even number less than 5 occurred 24 times. What is the probability of getting the number 6 on the die?

Asked by Topperlearning User 13th December 2013, 2:19 AM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 13th December 2013, 2:16 AM
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CBSE - IX - Mathematics - Probability

A bag contains 12 balls out of which x are white. If one ball is taken out from the bag, find the probability of getting a white ball. If 6 more white balls are added to the bag and the probability now for getting a white ball is double the previous one, find the value of x.

Asked by Topperlearning User 12th December 2013, 10:11 AM
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CBSE - IX - Mathematics - Probability

In making a math project, a teacher found out that 26 people took two to three hours, 14 people took three to four hours and 10 people took more than four hours to complete a particular assignment. What is the experimental probability that the assignment can be done in less than four hours?

Asked by Topperlearning User 12th December 2013, 9:37 AM
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CBSE - IX - Mathematics - Probability

Two dice are thrown 400 times. Each time sum of two numbers appearing on their tops is noted as given in the following table: Sum 2 3 4 5 6 7 8 9 10 11 12 Frequency 14 20 32 45 62 65 60 43 36 18 5 What is the probability of getting a sum (i) 5 ? (ii) more than 10 ? (iii) between 5 and 10?

Asked by Topperlearning User 11th December 2013, 3:43 AM
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CBSE - IX - Mathematics - Probability

The age (in years) of workers are as follows: Age (in yrs) 10 - 19 20 - 29 30 - 39 40 - 49 50 - 59 60 and above No. of workers 5 40 26 15 8 6 If a worker is selected at random, find the probability that the person is: (a) 30 years or more (b) below 50 years

Asked by Topperlearning User 11th December 2013, 3:34 AM
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CBSE - IX - Mathematics - Probability

The percentage of marks obtained by a student in monthly unit test are given below: Unit Test 1 II III IV V % Marks 70 72 65 68 85 Find the probability that the student gets (a) more than 70% marks (b) more than 90% marks

Asked by Topperlearning User 11th December 2013, 3:32 AM
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CBSE - IX - Mathematics - Probability

The weekly pocket money of students are given in the following table:  Pocket Money (in Rs) Number of students 145 7 140 4 159 10 171 6 158 3 147 8 165 12 Find the probability that the weekly pocket money of a student is: (a) Rs 159 (b) more than Rs 159 (c) Less than Rs 159

Asked by Topperlearning User 11th December 2013, 3:29 AM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 11th December 2013, 3:25 AM
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CBSE - IX - Mathematics - Probability

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CBSE - IX - Mathematics - Probability

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CBSE - IX - Mathematics - Probability

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CBSE - IX - Mathematics - Probability

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CBSE - IX - Mathematics - Probability

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CBSE - IX - Mathematics - Probability

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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 11th December 2013, 2:10 AM
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CBSE - IX - Mathematics - Probability

Following table shows the marks obtained by 30 students in a class test: Marks Obtained 70 58 60 52 65 75 68 Number of Students 3 5 4 7 6 2 3 Find the probability that a student secures (a) 60 marks (b) less than 60 marks.

Asked by Topperlearning User 11th December 2013, 1:20 AM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 11th December 2013, 1:18 AM
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CBSE - IX - Mathematics - Probability

A survey at a university was conducted among 880 students. Of these, 500 identified themselves as "smokers". Compute the empirical probability that a randomly selected student is not from a "smoker".

Asked by Topperlearning User 11th December 2013, 1:10 AM
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CBSE - IX - Mathematics - Probability

Two coins are tossed simultaneously 1000 times with the following frequencies of different outcomes: Outcomes 2 Heads 1 Head No Head Frequency 190 560 250 Find the probability of occurrence of each of these events.

Asked by Topperlearning User 11th December 2013, 1:09 AM
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CBSE - IX - Mathematics - Probability

Three unbiased coins are tossed together. Find the probability of getting (i) Two heads (ii) At least two heads (iii) No head

Asked by Topperlearning User 11th December 2013, 1:05 AM
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CBSE - IX - Mathematics - Probability

A bag contains cards numbered form 2 to 25. A card is drawn at random from the bag. Find the probability that selected card bears a number which is multiple of 2 and 3.

Asked by Topperlearning User 11th December 2013, 12:54 AM
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CBSE - IX - Mathematics - Probability

A die is thrown 400 times. The frequency of the outcomes of the events are given as under: Outcomes 1 2 3 4 5 6 Frequency 70 65 60 75 62 68 Find the probability of: (i) Occurrence of an even number. (ii) Occurrence of a number less than 2.

Asked by Topperlearning User 11th December 2013, 12:49 AM
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CBSE - IX - Mathematics - Probability

A bag contains cards numbered from 1 to 25. A card is drawn at random from the bag. Find the probability that selected card bears number which is multiple of 2 or 3.

Asked by Topperlearning User 11th December 2013, 12:44 AM
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CBSE - IX - Mathematics - Probability

The following data shows the blood groups of 40 students of a class: Blood group A AB B O No. of students 10 15 12 3 A student is selected at random from the class. Find the probability that the child: (i) has blood group A (ii) has blood group O (iii) does not have blood group AB

Asked by Topperlearning User 11th December 2013, 12:38 AM
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CBSE - IX - Mathematics - Probability

Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes: Outcomes 3 heads 2 heads 1 head No heads Frequency 23 72 77 28 Find the probability of getting (i) 3 heads (ii) at least two heads (iii) two heads and one tail.

Asked by Topperlearning User 11th December 2013, 12:33 AM
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CBSE - IX - Mathematics - Probability

Asked by Topperlearning User 11th December 2013, 12:23 AM
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CBSE - IX - Mathematics - Probability

A survey of 10 student is done regarding the likes and dislike about the subject mathematics. The data are given below: Views Number of students Likes 80 Dislikes 20 Find the probability that a student chosen randomly (a) likes mathematics (b) does not like mathematics

Asked by Topperlearning User 11th December 2013, 12:08 AM
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CBSE - IX - Mathematics - Probability

One card is drawn at random from a well shuffled deck of 52 cards. Find the probability for getting a face card.

Asked by Topperlearning User 11th December 2013, 12:05 AM
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