If P(B)=1/5, compute P(not B)
Please Help??
P = (1/5)B
p= 2/5
To compute P(not B), you need to find the probability of the event "not B" occurring. In other words, you need to find the probability of the complement of event B.
The complement of an event refers to all the outcomes of the sample space that are not part of the event in question. In this case, the complement of event B is the event not B.
To find the probability of not B, you subtract the probability of event B from 1 (since the sum of the probabilities of all possible outcomes is always 1).
Given that P(B) = 1/5, you can calculate P(not B) using the following formula:
P(not B) = 1 - P(B)
P(not B) = 1 - 1/5
P(not B) = 5/5 - 1/5
P(not B) = 4/5
Therefore, the probability of event not B occurring is 4/5.