50 students are randomly selected and 4 own cats. If there are 800 students, how many of them own cats?
To find out how many students out of the 800 own cats, we can set up a proportion using the information from the 50 randomly selected students.
Let x represent the number of students who own cats out of the 800 total students.
4/50 = x/800
Now we can cross multiply to solve for x:
50x = 4 * 800
50x = 3200
x = 3200 / 50
x = 64
So, out of the 800 students, 64 of them are estimated to own cats.