Question

A survey was conducted on a random sample of 7th graders. 18 out of 30 are going to the dance. If there are 480 7th graders, estimate the number who will attend the dance?​

Answer 1

288

Explanation:

To estimate the number of 7th graders attending the dance, we need to extrapolate the sample proportion to the total population.

The sample proportion of 7th graders who are going to the dance is 18/30 = 0.6.

So, the estimated number of 7th graders who will attend the dance is:

0.6 * 480 = 288.

Answer 2

108

Explanation:

480÷30= 6 [no. of groups in 30]

18×6= 108