A student was given an assignment to determine the percentage of students that brought a bag lunch to school. The student chose
5 random classrooms and surveyed every student in those classrooms. Which type of sampling did the student use?
2 answers:
Answer:
Step-by-step explanation:
did you get the answers???
Answer:
The student used cluster sampling.
Step-by-step explanation:
The student chose 5 random classrooms and surveyed every student in those classrooms.
This is a form of cluster sampling.
Cluster sampling is a sampling method where the population is divided into different groups by the researcher. These groups are called clusters.
Then out of these clusters, simple random samples are selected and the required survey is conducted from the sampled clusters.
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Answer:
14
Step-by-step explanation:
k
=
c
−
b
2
4
a
We know that
a
=
1
,
b
=
−
8
and
c
=
2
, so let's substitute:
k
=
2
−
(
−
8
)
2
4
(
1
)
=
2
−
64
4
=
2
−
16
=
−
14
.
So, we have
min
=
−
14
. Let's check:
graph{(x^2 - 8x + 2 - y)(-14 -y)=0 [-11.82, 20.22, -15.38, 0.64]}
t(f) = 27*f
g(t) = $0.04*27*f
without the value for f (the number of friends) that is the farthest this can be solved.
Answer:
-6
Step-by-step explanation:
The slope of a line is given with the formula
Using the first two points, (-2, 8) and (-1, 2), we have
m = (2-8)/(-1--2) = -6/(-1+2) = -6/1 = -6
it's C because the floor area is 120 square feet and the walls are 8 feet so if you multiply 120 × 8 you get 960.
Y=3/4x+2 cus u subtract than divide
