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DIA [1.3K]
3 years ago
10

It is clear that a large survey is an appropriate method for a study of marriage patterns among college students. What will the

researcher need to do to insure that the research sample is random?
Mathematics
1 answer:
Ulleksa [173]3 years ago
7 0

Answer:

Here the sample is the college students, and the researcher want's to do a survey to obtain information about marriage patterns.

Then, the ideal sample will be constituted of students of both genders, of different ideologies, of different social classes, of different religions, etc.

Then the thing that the researcher needs to do is:  

Define the size of the sample

Assign to each student a unique number.

using a random number generator,  generate enough different numbers to fill the sample.

Each of these numbers corresponds to a unique student, so now you have a complete sample of random selected students.

This sample can not be biased in any way.

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A recipe calls for 2 cups of flour of flour to make 3 dozen cookies. Is 3 cups of flour enough to make 60 cookies?
Alex787 [66]

Answer:

no it is not

Step-by-step explanation:

it would be 54

8 0
3 years ago
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Grace's car left four skid marks on the road surface during a highway accident. Two of the skid marks were each 52 feet and two
Mashcka [7]

Answer:

The skid distance to be used is 54 feet.

Step-by-step explanation:

Given:

Four skid marks on the highway.

52,52,56,56  in feet.

We have to find the skid distance.

The skid distance that will be used to further calculate the skid speed is actually the mean skid distance.

Mean skid distance (m) :

⇒ (m)=\frac{Sum\ of \ the\ skid\ marks }{Number\ of\ skid\ marks}

⇒ (m) =\frac{52+52+56+56}{4}

⇒ (m) =\frac{216}{4}

⇒ (m)=54  feet.

So the skid distance to be used is 54 feet.

7 0
3 years ago
Integers help please
Harlamova29_29 [7]
The correct answer is 1/5^13
5 0
3 years ago
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​For the two right triangles above, explain why a/8=x/12 . ​ ​What ​trigonometric ratio is also equal to the two given ratios?
frutty [35]

Answer:

sin trigonometry ratio

Step-by-step explanation:

Given

See attachment for triangles

Required

Explain why \frac{a}{8} = \frac{x}{12}

From the attached diagram, both triangles are similar triangles because

(1) the second triangle is a dilation of the first triangle by a ratio of 1.5

i.e

k = \frac{12}{8}

k = 1.5

(2) They have angle 30 degrees, and have their right angles located at the same point

In the first triangle, the sine of 30 degrees is represented as:

sin(30) = \frac{Opp}{Hyp}

This gives:

sin(30) = \frac{a}{8}

In the second triangle:

sin(30) = \frac{Opp}{Hyp}

So:

sin(30) = \frac{x}{12}

By comparison:

sin(30) = sin(3)

Hence:

\frac{a}{8} = \frac{x}{12}

8 0
3 years ago
What is the value of x in the equation 3x – y = 18, when y = 27?
atroni [7]
<span>3x – y = 18 

We start by plugging in 27 for y. The goal is to isolate x by itself to solve for x.

3x - 27 = 18

Then we add 27 to both sides of the equation

3x = 45

Lastly, we divide both sides by 3 to finally isolate x by itself and solve.

x = 15</span>
3 0
3 years ago
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