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Luba_88 [7]
3 years ago
14

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?
A. convenience

B. systematic

C. stratified

D. cluster
Mathematics
2 answers:
tiny-mole [99]3 years ago
8 0
I believe it's cluster sampling.
JulsSmile [24]3 years ago
3 0

Answer: D. cluster

Step-by-step explanation:

A cluster sampling is a random sampling method in which a researcher splits the entire population into separate groups known as clusters.Then, he draw a random sample of clusters from the population.

After this he performs his analysis on data from the sampled clusters.

Given: 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.

Here classes is denoted as clusters and the student as researcher.

Hence, the cluster sampling is used by the student.

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The width of a rectangle is two cm less than 8 times the length. The perimeter is 88 cm. What is the width and length of the rec
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Let's the length to be x,

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Perimeter of a rectangle = 2*Width + 2*Length

Perimeter of the rectangle = 2(8x-2) + 2x = 16x - 4 + 2x = 18x - 4

Ar the same time, Perimeter of the rectangle = 88.

So, we can write

18x - 4 = 88

18x = 84

9x=42

x= 42/9 cm (length) or ≈ 4.67 cm (length)

8x - 2 = 8*42/9 - 2 ≈ 35.33 cm (width)


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3 years ago
What is the fraction of this question plz help me
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There is probability of 7/8 of not getting yellow.

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Jan and Wayne went to the store to buy some groceries. Jan bought 2 cans of corn beef hash and 3 cans of creamed chipped beef fo
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You can solve this by using the system of equations.
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Solve. And you'll get:
-6H + (-9C) = -14.85
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Cross out -6H and 6H because they cancel out. And you're left with:
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Add -9C with 4C, and -14.85 with 10.9.
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Divide each side with -5.
C = $0.79

Now to figure out what H is, just substitute the C in one of the equations with 0.79.
5.45 = 3H + 2(0.79)
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7 0
3 years ago
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