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.

answer: 230 miles ( vote ! )

step-by-step explanation:

180.39 minus 17.99 equals 162.4

then divide 162.4 by .80 to get 230

answer: haha (: i’ll go see what it is

step-by-step explanation: