Question

In a survey, it was found that 77% of adults operate the flusher of toilets in public restrooms with their foot. A sample of 400 adults is randomly chosen. What is the mean of the distribution?

Option 1: 308 adults
Option 2: 296 adults
Option 3: 308.8 adults
Option 4: 292 adults

Answer 1

The mean of the distribution is 308 adults.

Step-by-step explanation:

In statistics, the mean of a distribution, often denoted by (x-bar), is a measure of central tendency that represents the average value of a set of data points. The mean is calculated by summing up all the values in a dataset and dividing the sum by the number of data points.

To find the mean of a distribution, we multiply the proportion by the total number of individuals in the sample. In this case, 77% of 400 adults operate the flusher of toilets with their foot, so the mean would be:

Mean = 0.77 * 400 = 308 adults

Therefore, the correct option is Option 1: 308 adults.