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nydimaria [60]
3 years ago
10

To conduct a survey about the type of phone service most people in Greenville prefer, 10 different blocks in the neighborhood ar

e 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
Mathematics
2 answers:
Andrew [12]3 years ago
7 0

Answer:

The sampling method is stratified sampling.

Step-by-step explanation:

Stratified sampling is a method where the population is divided into groups and then from within each group a probable sample is selected.

Here, the groups the blocks. Then from each block, 10 houses are randomly selected and 1 person interviewed(probability sample).

Therefore, it is a stratified sampling.

algol133 years ago
5 0
This method is called cluster sampling. I hope it will work.
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Find cos B, sinB,tanb
emmasim [6.3K]

Using right triangle relations, we will get:

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  • sin(B) = 0.735
  • cos(B) =  0.7

<h3>How to find the value of the trigonometric equations?</h3>

We assume that bot triangles are equivalent, then the angle B will be the same as the angle Z.

Now remember the relations:

  • tan(θ) = (opposite cathetus)/(adjacent cathetus).
  • sin(θ) = (opposite cathetus)/(hypotenuse)
  • cos(θ) = (adjacent cathetus)/(hypotenuse).

If we step on angle B, we have:

  • opposite cathetus = 29.4
  • adjacent cathetus = 28
  • hypotenuse = 40.6

Replacing that, we get:

  • tan(B) = 29.4/28 = 1.05
  • sin(B) = 29.4/40.6 = 0.735
  • cos(B) = 28/40.6 = 0.7

If you want to learn more about trigonometric functions:

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6 0
1 year ago
Use the digits 1,2,3 and 4 once each to get the largest answer possible
sukhopar [10]

Answer:

4,321

Step-by-step explanation:

This is the answer because:

1) We know that if the number has to be big therefore, we have to put 4 in the thousands place because 4 is bigger than 3, 2, and 1

2) Next, 3 is the other biggest number, for that reason 3 is in the hundreds place

3) Then, 2 is the other bigger number; therefore, the tens place is 2

4) Finally, the last number remaining is 1, which is in the ones place

Therefore, the answer is 4,321

Hope this helps!

8 0
3 years ago
When the full season tickets first went on sale,2,000 Full season tickets sold for Section N. Two weeks after the tickets first
slega [8]

Image showing the arena ticket prices is missing, so i have attached it.

Answer:

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Step-by-step explanation:

We are told that when the full season tickets first went on sale, that 2000 full season tickets were sold for section N.

Now, from the area ticket prices table attached, we can see that full season tickets for Section N costs $20

Thus, amount of money spent when the tickets first went on sale = 2000 × 20 = $40000

We are told that 2 weeks after the tickets first went on sale, they sold 1500 tickets. Thus, amount spent after 2 weeks release = 1500 × 20 = $30000

Difference in amount spent at the beginning and after 2 weeks = $40000 - $30000 = $10000

Thus, $10000 more money was spent when the tickets first went on sale than after the first 2 weeks

6 0
3 years ago
Solve for x -16 = 8x/5
11111nata11111 [884]

Answer:

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Step-by-step explanation:

Make sure you have a negative in front of the mixed fraction.

6 0
3 years ago
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27 multiplied by 10 will give you the answer. 27 x 10 = 270.
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2 years ago
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