Question

the table below gives the probability density for blood types in a population. if a person is selected at random, what is the probability that their blood type is a or ab? p = ?

Explanation:

Step1: Identify the probabilities

The probability of blood type A is \(0.27\), and the probability of blood type AB is \(0.04\).

Step2: Apply the addition rule for mutually - exclusive events

For mutually - exclusive events \(E_1\) and \(E_2\), \(P(E_1\cup E_2)=P(E_1)+P(E_2)\). Here, let \(E_1\) be the event of blood type A and \(E_2\) be the event of blood type AB. Then \(P = 0.27+0.04\).

Answer:

\(0.31\)