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ololo11 [35]
3 years ago
10

A statistics teacher has 4 periods of introductory statistics. She wants to get students’ opinions on a new homework policy. To

get a sample, the teacher randomly selects 1 period and surveys all of the students in that class. Which sampling method was used?
A.) cluster sampling
B.) simple random sampling
C.) stratified random sampling
D.) systematic random sampling
Mathematics
2 answers:
ladessa [460]3 years ago
8 0

Answer:

the answer is B

b) Simple random sampling

Radda [10]3 years ago
3 0

Answer:

Simple random sampling

Step-by-step explanation:

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Bethany has $3.10 in nickels and dimes. She has a total of 44 coins. What is the value of the nickels Bethany has? a. $0.90. b.
drek231 [11]
Hello,

A nickel is $0.05
A dime is $0.10

Let's x the number of dimes
44-x the number of nickels

0.10*x+0.05*(44-x)=3.10
==>10x+5*(44-x)=310
==>10x-5x=310-5*44
==>5x=90
==>x=18
There are 18 dimes and 44-18=26 nickels having a value of 26*$0.05=$1.30

Answer B
6 0
4 years ago
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The surface of a city playground is being covered with rubber mulch, which is shredded rubber made from recycled tires. A city w
34kurt

The number of bags of mulch that is needed to cover the playground is 3,605 bags.

<h3>How many bags of mulch is needed?</h3>

The first step is to determine the volume of the surface of the city playground. The volume is the product of the length, width and height of the playground.

Volume = length x width x height

4 x 40.5 x 66.75 = 10,813.50 inches³

The second step is to determine the number of bags of mulch that is needed to cover the surface of the playground.

Number of bags of mulch = volume of the playground / volume one bag can cover

10,813.50 inches³ / 3 = 3,604.5 bags ≈ 3,605 bags

To learn more about the volume of a cuboid, please check: brainly.com/question/26406747

#SPJ1

6 0
1 year ago
Dr. Bhatia mixes 2 liters of a 5% saline solution with x liters of a 9% saline solution. The table shows the amount of each solu
MAXImum [283]
The value of x is 6.
7 0
4 years ago
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Bryson recorded the following ages of family members at his grandmother's birthday party: 72, 28, 16, 8, 4, 12, 80, 93, 37, and
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100

Step-by-step explanation:

7 0
3 years ago
Plz help with 8 thank you sooo much
Maru [420]
Well since its literally impossible to draw a graph and show you on this website. I suggest you go to open study and get some help
5 0
3 years ago
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