The percentage of attendance of different classes in a year in a school is given below:
What is the probability that the class attendance is more than 75%?
The total number of trials is 6.
Let A be the event that the attendance of a class is more than 75%.
The number of times A happens is 3 (for classes’ VIII, VII and VI).
Remember the empirical or experimental or observed frequency approach to probability.
If n be the total number of trials of an experiment and A is an event associated to it such that A happens in m-trials. Then the empirical probability of happening of event A is denoted by P(A) and is given by
P(A) = `m/n`
Therefore, we have
` P (A) = 3/6 `
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