Find the expected frequency, $E_{i}$, for the given values of $n$ and $p_{i}$. \[ n=160, p_{i}=0.4 \] $E_{i}=\square$ (Type an integer or a decimal.)

Step 1 ：Given values are $n=160$ and $p_{i}=0.4$

Step 2 ：The expected frequency, $E_{i}$, is calculated by multiplying the total number of trials, $n$, by the probability of the event, $p_{i}$

Step 3 ：So, $E_{i} = n \times p_{i} = 160 \times 0.4 = 64.0$

Step 4 ：Final Answer: $E_{i}=\boxed{64.0}$