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Fudgin [204]
4 years ago
14

A large company wants to administer a satisfaction survey to its current customers. Using their customer​ database, the company

randomly selects 8080 customers and asks them about their level of satisfaction with the company.
Identify which of these types of sampling is​ used: random,​ systematic, convenience,​ stratified, or cluster.
Mathematics
1 answer:
shtirl [24]4 years ago
5 0

Answer: Random

Step-by-step explanation:

  • In statistics , a random sampling technique is a simple sampling technique in which researcher choose 'n' individuals from N population , such that the chances for each individual to get selected are equal as \dfrac{1}{N}.

Here , the company wants to administer a satisfaction survey to its current customers.

So , Population → All current customers

Using their customer​ database, the company randomly selects 80 customers , it means each customer had the same chance to get selected.

Hence, the type of sampling is​ used : Random sampling

Hence, the correct answer is "Random" .

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How do you find the coordinates of a missing side of a square (axes)​
Debora [2.8K]

Answer:So first, I found the length of the sides and the diagonal of the square, which are 18−−√ and 6 respectively. By graphing, I know the solution is (0,−1). Then, I assume that since the length between (3,2) and (−3,2) is the diagonal, then the distance between (0,5) and the remaining vertex must be the diagonal too. And since the length of the side is 6, then the distance between the vertex and either (3,2) or (−3,2) must be 6. So:

(x−3)2+(y−2)2−−−−−−−−−−−−−−−√=18−−√

(x−0)2+(y−5)2−−−−−−−−−−−−−−−√=6

Which gives (after a bit of cleaning up):

x2+y2−10y=11

x2−6x+y2−4y=5

Then, replacing the second expression into the first one:

x2−6x+y2−4y=5⇒x2=5+6x−y2+4y

5+6x−y2+4y+y2−10y=11

5+6x+4y−10y=11

6x−6y+6

x−y=1

x=1+y

Up to this point, I know I'm not entirely wrong because the expression is true for the actual coordinates of the vertex, because 0=1+(−1) is true. But I wouldn't know how to proceed if I hadn't known the answer beforehand. I need to find both x and y, is there a linear equation I'm missing to find the exact coordinates of the last vertex? Is my process okay or is there a simpler way to do it?

Step-by-step explanation:

6 0
3 years ago
Another company offers a rate of 0.05per minute how would you find the unit rate per hour
Dominik [7]
If you want to figure out how much it is an hour you need to convert 1 hour into minutes. 1 hour = 60 minutes After you've figured out your conversion multiply the rate and units. .05(60) When you multiply that you should get 3 as your answer.
7 0
3 years ago
Describe a theme park ride that has a constant speed but changing velocity?
kogti [31]
The only difference between speed and velocity is that velocity also includes direction, so if the speed is the same but the velocity is changing, that means that the direction is changing on the ride, but the speed is staying the same.
7 0
3 years ago
Read 2 more answers
Classify the system of equations
Lelechka [254]

Answer: Inconsistent.

Step-by-step explanation:

The equation of the line in Slope-intercept form is:

y=mx+b

Where m is the slope and b is the y-intercept.

Solve for y from each equation:

Equation 1:

-\frac{1}{2} x = -6 - y\\\\y-\frac{1}{2} x = -6\\\\y=\frac{1}{2} x-6

Equation 2:

3+y= \frac{1}{2} x + 4\\\\y= \frac{1}{2} x + 4-3\\\\y= \frac{1}{2} x+1

A system of equations can be classified by its number of solutions.

You can observe that the slopes of both equations are the same but the y-intercepts are different, then these lines are parallel, which means that they do not intersect.

By definition, when to lines are parallel there is NO SOLUTION and the system is classified as "Inconsistent".

5 0
3 years ago
What is rhe sum of 4 5/6 3 5/6
irina [24]
Sum means add.

So, we'd need to add 

4 5/6 + 3 5/6

5/6 + 5/6 = 10/6, or 1 4/6, or 1 2/3.

4 + 3 = 7

7 + 1 =8

8 2/3 is your answer.

Glad I could help, and good luck!
4 0
3 years ago
Read 2 more answers
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