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vazorg [7]
3 years ago
12

A daycare center operator wanted to survey her parents to determine if they were interested in the center providing once-a-month

Saturday night care for their children. Rather than survey all 254 parents, the operator took the list of parents' names and, starting with the third parent's name, surveyed every twelfth parent. What type of sampling did the daycare operator use
Mathematics
2 answers:
Kryger [21]3 years ago
4 0

Answer:

Systematic Sampling

Step-by-step explanation:

According to the Question,

  • systematic sampling is a statistical method involving the selection of elements from an ordered sampling frame. The most common form of systematic sampling is an equiprobability method. In this approach, progression through the list is treated circularly, with a return to the top once the end of the list is passed. The sampling starts by selecting an element from the list at random and then every Kth element in the frame is selected.

So, systematic sampling is right Answer.

Aleonysh [2.5K]3 years ago
3 0

Answer:

Systematic Sampling

Step-by-step explanation:

What type of sampling did the daycare operator use <u>Systematic Sampling.</u>

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Please Help! Show all the steps!
likoan [24]

You can start by subtracting different equations from each other.

3x + 2y + 3z = 1

subtract

3x + 2y + z = 7

2z = -6

divide by 2

z = -3

add the following two expressions together:

3x + 2y + z = 7

3x + 2y + 3z =1

6x + 4y + 4z = 8

subtract the following two expressions:

6x + 4y + 4z = 8

5x + 5y + 4z = 3

x - y = 5

^multiply the whole equation above by 3

3x - 3y = 15

subtract the following two expressions:

3x - 3y = 15

3x + 2y = 10

-5y = 5

divide each side by -5

y=-1

take the following expression from earlier:

x - y = 5

substitute y value into above equation

x - - 1 = 5

2 negatives make a positive

x + 1 = 5

subtract 1 from each side

x = 4

Therefore x = 4, y = -1, z = -3

I checked these with all 3 equations and they worked :)

(it's quite complicated, comment if you don't understand anything) :)

7 0
3 years ago
19.5+24+7.5 =<br> 19.5+__+24 =<br> ___+24+___=
krek1111 [17]
See attached photo for solution

please give a thanks or brainliest if you found my answer helpful :)

8 0
3 years ago
Base: 11 m, area: 1115.5 m2
Marina86 [1]

101.4

1115.5 \div 11 = 101.4

8 0
3 years ago
Find the distance between the points (4/4,1/10) and (2/5,7/10)​
snow_tiger [21]

Answer:

d= 2345.67

Step-by-step explanation:

 or d= 18400

6 0
4 years ago
What type of polygon is shown
REY [17]
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5 0
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