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Nimfa-mama [501]
2 years ago
9

At a party there are 30 students over the age of 21 and 15 under the age of 21. You select a representative sample of 5to interv

iew about attitude towards alcohol. Explain your method and select ypur sample
Mathematics
1 answer:
Feliz [49]2 years ago
7 0

Answer:

Stratified sampling

Step-by-step explanation:

Given

30 \to 21\ and\ above

15 \to Under\ 21

Required

The type of sampling method

From the question, we understand that, the sample are divided into two categories. This means that each person in each person do not have the same probability of being selected.

<em>Such method is a stratified sampling</em>

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How many restaurants have a excellent rating that seat over 100. A) 182 , B) 159, C)180 OR D) 311
ivanzaharov [21]

Answer:  I don't know if this is possible to solve https://youtu.be/dQw4w9WgXcQ

Step-by-step explanation:

6 0
3 years ago
(2a-5)/6 = 5/12 what is the answer?
USPshnik [31]

Answer:

a = 15/4.

Step-by-step explanation:

(2a-5)/6 = 5/12

Cross multiply:

12(2a - 5) = 5*6

24a - 60 = 30

24a = 90

a = 90/24

a = 15/4.

3 0
3 years ago
#15. A cube has a volume of 200 cm ^2 write the
levacccp [35]

Answer:

2(25)^{\dfrac{1}{3}}

Step-by-step explanation:

The volume of a cube is 200 cm².

We need to find the edge length of the cube.

The formula for the volume of a cube is given by :

V=a^3

a is the side of the cube

a=\sqrt[3]{200} \\\\=(200)^{\dfrac{1}{3}}\\\\=(25\times 8)^{\dfrac{1}{3}}\\\\=(25)^{\dfrac{1}{3}}\times (8)^{\dfrac{1}{3}}\\\\=2(25)^{\dfrac{1}{3}}

So, the edge length of the cube is 2(25)^{\dfrac{1}{3}}.

3 0
2 years ago
How to factorise 3u^2-2u-5<br>​
Lostsunrise [7]
It would be (3u-5)(u+1)
4 0
3 years ago
Given: a || b, transversal k<br> Prove &lt;3 = &lt;6
Mariulka [41]

By the property of corresponding angles  ∠3 ≅ ∠5.

<h3>What is transversal line?</h3>

In geometry, a transversal is any line that intersects two straight lines at distinct points.

If two parallel lines are cut by a transversal, then each pair of corresponding angles are equals.

That is, ∠3 = ∠5 and ∠4 = ∠6.

Therefore the given angles ∠3 and ∠5 are equal.

Hence  ∠3 ≅ ∠5 .

Know more about transversal line here :

brainly.com/question/17432060

#SPJ1

7 0
2 years ago
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