1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sliva [168]
3 years ago
9

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.
systematic

B.
cluster

C.
stratified

D.
convenience
Mathematics
2 answers:
Scorpion4ik [409]3 years ago
5 0

The answer is B. Cluster

const2013 [10]3 years ago
5 0

Answer:  B.   cluster

Step-by-step explanation:

  • Cluster sampling is a type of sampling method in which the researcher divides the whole population into separate sets which are called as clusters. Then he selects a simple random sample of clusters from the population. The researcher conducts his analysis on data from the sampled clusters.

Given: The student chose 5 random classrooms and surveyed every student in those classrooms. It shows that the student use Cluster sampling.

You might be interested in
Anyone know how to do this? If so plz help
bekas [8.4K]

NOTES:

Use the equation y = mx + b where m is the unit rate and b is the one-time flat fee

1. Answer:

\begin {array}{c||c|c|c|c}x&0&1&2&3\\ y&70.00&70.20&70.40&70.60\\\end{array}

<u>Step-by-step explanation:</u>

coffee maker costs $70 - this is a one-time flat fee

it costs $0.20 per cup of coffee - this is the unit rate

y = 0.20x + 70

y = 0.20(0) + 70   →   y = 0.00 + 70   →   y = 70.00

y = 0.20(1) + 70   →   y = 0.20 + 70    →   y = 70.20

y = 0.20(2) + 70   →   y = 0.40 + 70   →   y = 70.40

y = 0.20(3) + 70   →   y = 0.60 + 70   →   y = 70.40

*******************************************************************************

2. Answer:

\begin {array}{c||c|c|c|c}x&1&2&3&4\\ y&4.50&6.00&7.50&9.00\\\end{array}

<u>Step-by-step explanation:</u>

shoes costs $3.00 - this is a one-time flat fee

it costs $1.50 per game of bowling - this is the unit rate

y = 1.50x + 3.00

y = 1.50(1) + 3.00  →    y = 1.50 + 3.00   →   y = 4.50

y = 1.50(2) + 3.00  →   y = 3.00 + 3.00   →   y = 6.00

y = 1.50(3) + 3.00  →   y = 4.50 + 3.00   →   y = 7.50

y = 1.50(4) + 3.00  →   y = 6.00 + 3.00   →   y = 9.00

*******************************************************************************

3. Answer: Negative

<u>Step-by-step explanation:</u>

As the x-values increase, the y-values decrease.  Opposite directions results in a negative slope.

*******************************************************************************

4. Answer: Gym A → y = 20x + 50    Gym B → y = 25x + 30

<u>Step-by-step explanation:</u>

Use the slope formula: m = \dfrac{y_2-y_1}{x_2-x_1}.  Then choose ONE of the points and input the point (x₁, y₁) and slope (m) into the Point-Slope formula: y - y₁ = m(x - x₁) and solve for y.

Gym A: (x₁, y₁) = (1, 70) and (x₂, y₂) = (2, 90)

m=\dfrac{90-70}{2-1} = \dfrac{20}{1} = 20

y - 70 = 20(x - 1)

y - 70 = 20x - 20

y        = 20x + 50

Gym B: (x₁, y₁) = (1, 55) and (x₂, y₂) = (2, 80)

m=\dfrac{80-55}{2-1} = \dfrac{25}{1} = 25

y - 55 = 25(x - 1)

y - 55 = 25x - 25

y        = 25x + 30


5 0
3 years ago
below is a graph of a logarithmic function, identify it key characteristics. match accordingly.that is the question and can you
Zolol [24]

End behavior: f. As x -> 2, f(x) -> ∞; As x -> ∞, f(x) -> -∞

x-intercept: a. (3, 0)

Range: p. (-∞, ∞)

The range is the set of all possible y-values

Asymptote: x = 2

Transformation: l. right 2

with respect to the next parent function:

g(x)=\log _{\frac{1}{3}}(x)

Domain: g. x > 2

The domain is the set of all possible x-values

4 0
1 year ago
Tan (angle B) using an exact expression in trigonometric ratios in right triangles
goblinko [34]
The value of the tangent of an angle is the ratio (opposite side) / (adjacent side).

Here you see that the opposite side (opposite to Angle B) is of length 5 and the adj. side has length 12.

Thus, the tan of Angle B is 5/12.  (answer)

4 0
3 years ago
A line that passes through parallel lines is called a
Elena-2011 [213]
Transversal is the awnser
6 0
2 years ago
What is the measure of ∠H?
jek_recluse [69]
B. 73
360-102-138-47=73
5 0
3 years ago
Read 2 more answers
Other questions:
  • QUICK MATH QUESTION! I NEED INSTANT HELP!
    5·1 answer
  • Which of the following expressions is written in scientific notation?
    13·1 answer
  • Can someone help me please??
    13·1 answer
  • X^2=4 square root property
    12·1 answer
  • Write an inequality for the graph.
    7·1 answer
  • To the nearest whole degree ,what angle measure has a tangent of 8.9352
    14·1 answer
  • (20PTS, Will mark brainliest!) What is the 8th term of the arithmetic sequence with a first term of 7 and a common difference of
    13·1 answer
  • I NEED HELP PLEASE HELP ME
    14·1 answer
  • Mm... help please. I need to finish this homework, and I'll give brainliest since I'm numb.
    9·2 answers
  • Notes i
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!