Answer:
0B
Step-by-step explanation:
- Surveying the boys in the freshman class is biased. It doesn’t take a sample from all of the school, it is from only one grade and one gender.
-Surveying every other student in the cafeteria would be biased IF only a certain grade was in there at a certain time. If every student was in the cafeteria at the same time, it would be non biased.
-Students in her math class is biased- it only considers those in a certain class, not everyone.
-20 from each grade at random is NOT biased, it considers every grade and 20 random students.
-Chess club is biased. Only students in one particular group get to answer. Hope this helps!
Answer:
18
Step-by-step explanation:
Yur Welcome
Answer:
question is wrong
it is supposed to be y^2x2
Answer:
V = 523.6 yd³
Step-by-step explanation:
The equation for the volume of a sphere of radius r is
V = (4/3)πr³
and if we substitute 5 yds for r, we get
V = (4/3)*π*(5 yd)³, or
V = (4/3)·π·125 yd³, or approxomately
V = 523.6 yd³