In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.

See previous post.

To find the mean number of children in the sample who wear glasses, we need to multiply the percentage of children who wear glasses by the total number of children in the sample.

First, we calculate the total number of children who wear glasses:
25% of 64 children = (25/100) * 64 = 0.25 * 64 = 16

So, according to the given information, 16 children out of 64 wear glasses.

Now, we need to find the mean. The mean is calculated by dividing the sum of all values by the total number of values.

In this case, the sum of the number of children who wear glasses is 16 (since all children in the sample are wearing glasses).

Dividing the sum of 16 by the total number of values (which is 64), we get:
16 / 64 = 0.25

To round our answer to the nearest integer, we look at the decimal part (0.25). Since the decimal part is less than 0.5, we round down to the nearest integer.

Hence, the mean number of children in the sample who wear glasses is approximately 0.