A probability of $0$0 means:
an event is impossible.
an event is certain to occur.
an event is unlikely to occur.
A probability of $1$1 means:
A probability of $\frac{1}{10}$110 means:
A probability of $\frac{7}{10}$710 means:
conducts chance experiments and assigns probabilities as values between 0 and 1 to describe their outcomes