Apopulation of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eighth graders. nine seventh graders were part of a random sample of the population chosen to participate in a survey. for the sample to accurately represent the population, about how many sixth graders should be chosen?

The middle school has: 160 sixth graders, 180 seventh graders and and 140 eighth graders.

if in the sample of seventh graders were, chosen 9 of them, this is a 9/180= 0.05, or 5% of the total sample of seventh graders.

then, we also need to select a 5% of the total population of sixth graders for the survey, this is 0,05*160= 8, but remember that you need to select this 8 students at random.

nlgqer

step-by-step

on a coordinate grid, point a is at (−4.0, −2.4) and point b is at (4.0, −2.4). point b is a reflection of point a across the –axis. input either a lowercase x or i think is the right awnser

step-by-step explanation: