Question

Russell surveys 200 randomly selected seventh-graders in his school and finds that 30 attend summer camp. If there are 780 seventh-graders in his school, about how many are expected to attend summer camp?

Answer 1

117

Explanation:

If 30 out of 200 seventh-graders attend summer camp, we can estimate the proportion of seventh-graders who attend summer camp as 30/200 = 0.15.

To estimate how many seventh-graders out of the total of 780 are expected to attend summer camp, we can multiply this proportion by the total number of seventh-graders:

0.15 x 780 = 117

Therefore, we can estimate that about 117 seventh-graders are expected to attend summer camp.