5 students go to school one of which is known to be late; in fact he is late 22% of the time. What is the probability that he will not be late for school.
1 - .22 = ?
To calculate the probability that the student will not be late for school, we need to determine the complement of the probability that he will be late.
Given that he is late 22% of the time, we can say that he is on time 100% - 22% = 78% of the time.
Therefore, the probability that he will not be late for school is 78%.