In a group of students the probability that a student is left-handed is 0.28
A student is chosen at random from the group.
Find the probability that this student is not left-handed.
Answers
Probability that this student is not left-handed is 0.72.
Step-by-step explanation:
We are given that in a group of students the probability that a student is left-handed is 0.28 .
A student is chosen at random from the group.
And we have to find the probability that this student is not left-handed.
As we know that Sum of all probabilities of an even is equal to 1 which means that as in our question;
There will only be two cases that a student will be left-handed or right-handed . Other than this there will not be any further possibility.
So, Probability that student is left-handed + Probability that student is not left-handed = 1.
In the question, we are given the probability that a student is left-handed is 0.28.
Hence, Probability that this student is not left-handed = 1 - Probability that student is left-handed
= 1 - 0.28 = 0.72
Therefore, probability that this student is not left-handed is 0.72.