Describe in the context of the problem a random experiment in which the probability of an event can be calculated using the term $1 - \sum _ { i = 0 } ^ { 8 } \binom { 30 } { i } \cdot 0,2 ^ { i } \cdot 0,8 ^ { 30 - i }$, and give this event.
Describe in the context of the problem a random experiment in which the probability of an event can be calculated using the term $1 - \sum _ { i = 0 } ^ { 8 } \binom { 30 } { i } \cdot 0,2 ^ { i } \cdot 0,8 ^ { 30 - i }$, and give this event.