Question

60% of the voters favor Ms. Stein. If 200 voters are chosen at random, what is the expected number of voters who indicate favoring Ms. Stein?The expected number of voters who indicate favoring Ms. Stein is

Answer 1

Given,

The parcentage of voters in favr of Ms Stein is 60%.

The total number of voters are 200.

The expected number of voters who indicate favoring Ms. Stein is,

$\text{Expected value = probability}\times sample\text{ size}$

Substituting the values,

$\begin{gathered} \text{Expected value=}\frac{\text{60}}{100}\times200 \\ =120 \end{gathered}$

Hence, the expected number of voters who indicate favoring Ms. Stein is 120