Suppose Q and R are independent events. Find P (Q and R) if P (Q) = 7/15 and P (R) = 4/7

4/15.

Step-by-step explanation:

In probability, there are two types of events: the ones that are not related to each other and the ones that are related to each other. The former types of events are called independent events. In such cases, since the occurrence of one event is not related to and does not affect the other event, therefore, the probabilities of both events can be multiplied if they occur together. It is given that:

P (Q) = 7/15.

P (R) = 4/7.

P (Q and R) = P (Q) * P (R) = 7/15 * 4/7 = 4/15.

Therefore, the probability is 4/15!