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a_sh-v [17]
3 years ago
8

At a local community college, five statistics classes are randomly selected and all of the students from each class are intervie

wed.
What sampling technique is used?

A. convenience
B. systematic
C. random
D. cluster
E. stratified
Mathematics
1 answer:
Vilka [71]3 years ago
8 0

Answer:

D. cluster

Step-by-step explanation:

Convenience: Based on availability.

Systematic: The first element is sorted randomly, then the others follow a pattern.

Random: Each member of a sample has the same probability of being sorted.

Cluster: Each group is cluster, and when a cluster is sorted, every member of the group is sample. This is the correct answer.

Stratified: Population is divided into groups and then members from these groups are sorted.

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Answer:

3 as well lol?

Step-by-step explanation:

4 0
3 years ago
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Using Quadratic Equations to Solve Problems:
satela [25.4K]

Answer:

4

Step-by-step explanation:

Let x represent the number. The problem statement tells us ...

10x² = 40x

x = 4 . . . . . . . divide by 10x

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3 years ago
Plzzz helppppp. 4>n/-4
Akimi4 [234]

Answer:

-16 < n

Step-by-step explanation:

4>n/-4

Multiply each side by -4, remembering to flip the inequality

-4 *4 < n/-4 * -4

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4 0
3 years ago
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The distance d (in miles) that you can see to the horizon with your eye level h feet above the water is given by d=3h2−−−√. You
liubo4ka [24]

Answer: He cannot see a ship that is 4.5 miles away.

Step-by-step explanation:

Since we have given that

d=3\sqrt{h}

Here, h is the eye level above the water

d is the distance away.

If h = 12 feet

We will get :

d=3\sqrt{12}\\\\d=3\times 2\sqrt{3}\\\\d=6\sqrt{3}\\\\d=10.39

Hence, it is 10.39 feet away when eye level is 12 feet above the water.

Therefore , he cannot see a ship that is 4.5 miles away.

7 0
3 years ago
Anyone help?<br><br> What is the derivative of x^2 + 2x - 4?<br><br> Thanks!
castortr0y [4]
Let's take the derivative of each term one by 1

x^2
Apply the power rule for derivatives.
2x^(2-1) = 2x
You get 2x.

2x
Apply the power rule (x^1) and the constant multiple rule.
2 * x^(1-1) = 2 * x^0 = 2
You get 2.

-4
The derivative of a constant is 0.

Put that together and you get 2x + 2

Have an awesome day! :)
4 0
3 years ago
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