Question

A. 20 B. 30 C. 23 D. 39 I need a little help with this question

Answer 1

Given: A table that shows the result of a survey from 35 randomly selected students at Courtney's school.

Required: To determine the number of votes Rockzilla is expected to receive from a population of 115 students at Courtney's school.

This is achieved thus:

First, we determine the probability of Rockzilla's votes as follows:

`\begin{gathered} Prob.=\frac{Number\text{ }of\text{ }required\text{ }outcome}{Number\text{ }of\text{ }total\text{ }outcome} \\ Prob.=(6)/(35) \end{gathered}`

Next, we determine the number of votes Rockzilla is expected to receive as follows:

`\begin{gathered} Expected\text{ }votes=(6)/(35)*115 \\ Expected\text{ }votes\approx20 \end{gathered}`

Hence, the answer is:

`20`