Question

A study population includes 320 freshmen 300 sophomoras, 500 juniors, and 510 seniors,

Which sample best represents the population
O 18 freshmen, 18 sophomores, 30 juniors, 30 seniors
O 18 freshmen, 18 sophomores, 18 juniors, 18 seniors
O 18 freshmen 30 sophomores, 18 juniors, 30 seniors
30 freshmen, 30 sophomores, 18 juniors 18 seniors

Answer 1

Given nos

• 320
• 300
• 500
• 510

Ratio:-

• 320:300:500:510

Round out

• 300:300:500:500
• 18:18:30:30

Option A

Answer 2

18 freshmen, 18 sophomores, 30 juniors, 30 seniors

Explanation:

Given ratio

freshman : sophomores : juniors : seniors

= 320 : 300 : 500 : 510

320 ≈ 300 and 500 ≈ 510

Therefore, 300 : 300 : 500 : 500

Ratio of 300 : 500 = 18 : 30

So 18 : 18 : 30 : 30 best represents the population