Answer:
The mean for the number who oppose the measure is 96.
Step-by-step explanation:
We are given the following information in the question:
Percentage of voters who are in favor of a given ballot measure = 20%
Percentage of voters who are against a given ballot measure = 80%
Number of voters in a group = 120
Formula:
\(\text{Mean} = np\\\text{where n is the number of observations and p s the probability of sucess}\)
In this case, n = 120 and p = probability of success = Percentage of voters who are against a given ballot measure = 80%
Mean =
\(120\times 80\% \\\\120\times \displaystyle\frac{80}{100} = 96\)
Hence, the mean for the number who oppose the measure is 96.
