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Find the probability that a student obta...

Find the probability that a student obtained marks 60 or above.

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The percentage of marks obtained by 10 students in the monthly unit tests are given below: Based on this data, a student is selected at random. Find the probability that the selected student obtains more than 70% marks in a unit test.

The table given below shows the marks obtained by 50 students of a class in a test with maximum marks 100. A student of the class is selected at random. Find the probability that the selected student gets 60% or more marks

The table shows the marks (out of 150) obtained by a student in unit tests. Find the probability that the student gets 80% or more in the next unit test. Also, find the probability that the student gets less than 80% marks.

The percentage of marks obtained by a student in monthly unit tests are given below: Unit I II III IV V Percentage of marks obtained 69 71 73 68 76 Find the probability that the student gets: more than 70% marks less than 70% marks (iii) a distinction

The following table given the marks scored by 50 students in a 100 marks test of Mathematics. {:("Marks",0-20,20-40,40-60,60-80),("No of "3,12,18,10,7),("students",,,,):} A student is selected randomly from the class. Find the probability that selected student has scored 60 or more than 60 marks.

The percentage of marks obtained by a student in the monthly unit tests are given below : {:("Unit test",I,II,III,IV,V),("Percentage of ",69,71,73,68,74),("mark obtained",,,,,):} Based on this data, find the probability that the student gets more than 70% marks in a unit test.

The percentages of marks obtained by a student in six unit tests are given below : A unit test is selected at random . What is the probability that the student gets more than 60% marks in the test ?

NAVNEET PUBLICATION - MAHARASHTRA BOARD-PROBABILITY -EXERCISE 15.1
  1. 1500 families with 2 children were selected randomly , and the followi...

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  2. Refer to Example 5, Section 14.4, Chapter 14. Find the probability ...

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  3. Three coins are tossed simultaneously 200 times with the following fre...

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  4. An organisation selected 2400 families at random and surveyed them to ...

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  5. An organisation selected 2400 families at random and surveyed them to ...

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  6. An organisation selected 2400 families at random and surveyed them to ...

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  7. An organisation selected 2400 families at random and surveyed them to ...

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  8. An organisation selected 2400 families at random and surveyed them to ...

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  9. A teacher analyses the performance of two sections of students in a ma...

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  10. Find the probability that a student obtained marks 60 or above.

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  11. To know the opinion of the students about the subject statistics , a s...

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  12. To know the opinion of the students about the subject statistics , a s...

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  13. Refer to Q.2, Exercise 14.2. What is the empirical probability that a...

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  14. Refer to Q.2, Exercise 14.2. What is the empirical probability that a...

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  15. Refer to Q.2, Exercise 14.2. What is the empirical probability that a...

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  16. Activity : Note the frequency of two - wheelers , three - wheelers and...

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  17. Activity: Ask all the students in your class to write a 3-digit number...

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  18. Eleven bags of wheat flour, each marked 5 kg, actually contained the f...

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  19. In sum you were asked to prepare a frequency distribution table, rega...

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  20. In Q.1, Exercise 14.2, you were asked to prepare a frequency distri...

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