3. In a town, \(30 \%\) of residents listen to the local radio station. Four residents are chosen at random.
- State the distribution of the random variable \(X\), the number of these four residents that listen to local radio.
- On graph paper, draw the probability distribution of \(X\).
- Write down the most likely number of these four residents that listen to the local radio station.
- Find \(\mathrm { E } ( X )\) and \(\operatorname { Var } ( X )\).