A.) simple random sampling.
B.) stratified sampling.
C.) systematic random sampling.
D.) cluster sampling.
Answer:
Please help and NO LINKS
Please help and NO LINKSTo conduct a survey about the type of phone service most people in Greenville prefer, 10 different blocks in the neighborhood are chosen. On these 10 blocks, 10 houses are selected at random, and then one resident of each of those houses is interviewed. This type of sampling method is(A)
Step-by-step explanation:
(Ihopethishelps)(BRAINLEISTPLEASE)❤☺️☻♨️
Answer:
Cluster sampling
Step-by-step explanation:
AI-generated answer
The sampling method described in the question is cluster sampling. In cluster sampling, the population is divided into clusters or groups, and then a random sample of clusters is selected. In this case, the blocks in the neighborhood are the clusters.
Here is a step-by-step explanation of why this is cluster sampling:
1. The first step is to divide the population into clusters. In this case, the population is the neighborhood, and the clusters are the different blocks within the neighborhood.
2. Next, a random sample of clusters is selected. The question states that 10 different blocks in the neighborhood are chosen. This means that the researchers randomly selected 10 blocks from the neighborhood.
3. Once the clusters are selected, a sample is taken from each cluster. The question states that on these 10 blocks, 10 houses are selected at random. This means that within each of the 10 selected blocks, 10 houses are chosen randomly.
4. Finally, the residents of each selected house are interviewed. This means that every resident of each of the selected houses is interviewed to gather information about the type of phone service they prefer.
Overall, this sampling method is cluster sampling because the population is divided into clusters (blocks), a random sample of clusters (10 blocks) is selected, and then a sample is taken from each selected cluster (10 houses on each block).
Answer:
9 cm
Step-by-step explanation:
c^2=81
Take the square root of both sides.
The square root of c^2 is c.
The square root of 81 is 9.
c=9
Answer:
C = 9 centimeters
Step-by-step explanation:
First, look at the area of a square, which formula is c^2 or in standard format - s^2. Thus, we can say, c^2 = 81. Then, we can simplify, and put c = √81. Since 81 is a perfect square, 9 * 9 = 81. Thus the answer is 9 centimeters.
Using the graphing method, which of the following choices is the solution of the system?
A=(-3 ,-2)
B=(3 ,-2)
C= Infinite solutions
D= No solutions
Answer:
did i got it correct if yes follow plz
used a graphing tool to, well, graph it
see the solution in the screenshot, it's the point where the two lines intersect
Step 2: 6y − 3y − 5 = 20
Step 3: 3y − 5 = 20
Which of these is most likely the next step?
3y = 4
3y = 15
3y = 25
3y = 5
Answer with Step-by-step explanation:
We have to find the value of y for the equation:
6y − 3y − 5 = −3 + 23:
Step 1: 6y − 3y − 5 = −3 + 23
Solving the right hand side of the equation gives Step 2
Step 2: 6y − 3y − 5 = 20
combining the terms of y on left hand side gives step 3
Step 3: 3y − 5 = 20
Now, Adding 5 on both sides, we get
3y-5+5=20+5
⇒ 3y=25
Hence, most likely the next step is:
3y=25
None
Two
Infinitely many