Home
Class 12
MATHS
In a class of 75 students, 15 are above ...

In a class of 75 students, 15 are above average, 45 are average and the rest below average achievers. The probability than an above average achieving student fails is 0.005, that an average achieving student fails is 0.05 and the probabilit of a below average achieving students failing is 0.15. If a student is known to have passed, what is the probability that he is a below average achiever?

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • SELF ASSESSMENT PAPER 03

    ICSE|Exercise Section-B|10 Videos

  • SELF ASSESSMENT PAPER 03

    ICSE|Exercise Section -C|10 Videos

  • SELF ASSEMENT PAPER 8

    ICSE|Exercise SECTION C|10 Videos

  • SELF ASSESSMENT PAPER 04

    ICSE|Exercise SECTION .C.|12 Videos

Similar Questions

Explore conceptually related problems

In a class of 75 students, 15 are above average, 45 are average and the rest below average achievers. The probability that an above average achieving student fails is 0.005, that an average achieving student fails is 0.05 and the probability of a below average achieving student failing is 0.15. If a student is known to have passed, what is the probability that he is a below average achiever?

In a class of 100 students, there are 70 boys whose average marks in a subject is 75. If the average marks of the complete class is 72, then what is the average of the girls ?

In a college, 70% students pass in Physics, 75% pass in Mathematics and 10% students fail in both. One student is chosen at random. What is the probability that: He passes in Physics and Mathematics.

In a class, 30% students fail in English, 20% students fail in Hindi and 10% students fail in both English and Hindi. A student is chosen at random, then what is the probability he fail in English, if he has failed in Hindi?

The probability that a student will pass the final examination in both English and Hindi is 0.5 and the probability of passing neither is 0.1. If the probability of passing the English examination is 0.75. What is the probability of passing the Hindi examination?

In a college, 70% students pass in Physics, 75% pass in Mathematics and 10% students fail in both. One student is chosen at random. What is the probability that: He passes in Mathematics given that he passes in Physics.

In a college, 70% students pass in Physics, 75% pass in Mathematics and 10% students fail in both. One student is chosen at random. What is the probability that: He passes in Physics given that he passes in Mathematics.

In a class, 18 students had an average midterm exam grade of 85 and the 12 remaining students had an average midterm exam grade of 90. What is the average midterm exam grade of the entire class?

In a class of 40 students, 45% are girls and the remaining are boys. If the average of the girls marks is 54 and that of the boys is 46, what is the average of the whole class?

Two thirds of the students in a class are boys and the rest girls. It is known that the probability of a girl getting a first class is 0.25 and that of a boy getting a first class is 0.28. find the probability that a student chosen at random will get first class marks in the subject.