A population 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?
Answers
Answer:
8
Explanation:
5/100*160
=8
Answer:
Given Data :
Number of students in sixth graders is 160
Number of students in seventh graders is 180
Number of students in eighth graders students is 140
If the 9 student of seventh graders were part of a random sample of the population chosen to participate in a survey.
Suppose the number of the students chosen from sixth graders are "X"
So,
=> (180/ 9) = (160/ x)
=> 20 = 160/ x
=> x = 160/ 20
=> x = 8
The numbers of the student chosen from sixth graders are 8.
Take a Look :
Which of these is a people movement that appeals to switch off your lights at home for an hour on March 28 every year?
https://brainly.in/question/16425415
The recently opened Singshore suspension bridge is the highest bridge of which Indian state?
brainly.in/question/16378867