16. When determining the germination of a batch of seeds, a sample of 1000 units was taken. Out of the selected seeds, 90 did not germinate. What is the relative frequency of the appearance of viable seeds
S o l u t i o n. Let's denote the event: $A$ - a viable seed has been selected. We will find the relative frequency of event $A$ by applying formula (5). The total number of trials conducted is $n=1000$. The number of trials in which event $A$ occurred is $m=1000-90=910$.

The relative frequency of event $A$ is $W(A)=\frac{m}{n}=\frac{910}{1000}=0.91$.