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skelet666 [1.2K]
3 years ago
15

A researcher uses an anonymous survey to investigate the study habits of American college students. Based on the set of 56 surve

ys that were completed and returned, the researcher finds that these students spend an average of 4.1 hours each week working on course material outside of class. For this study, the average of 4.1 hours is an example of a?
Mathematics
1 answer:
tresset_1 [31]3 years ago
8 0

Answer:

Statistic

Step-by-step explanation:

A statistic is any quantity computed from values in a sample. Some examples of statistics are: sample mean (also called average, like in this case),   sample median, sample mode, sample standard deviation, sample quartiles and sample percentiles.

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Hi what is the answer for this
valentina_108 [34]

Answer:

16\pi

Step-by-step explanation:

area of a circle is pi x r x r

since it is a quarter

1/4 x pi x 8 x 8 = 16 x pi

3 0
3 years ago
Read 2 more answers
Case Study 2
ICE Princess25 [194]

Answer:

good for them i think

Step-by-step explanation:

this doesnt make any sense

4 0
3 years ago
? Explain idk what that means
Korvikt [17]

7 people, 7 walls, 48 minutes

Each person paints 1 wall in 48 minutes

20 persons, 20 walls

Each can paint 1 wall in 48 minutes so it will

take 48 minutes.

5 0
4 years ago
Hermes earns $6 an hour for babysitting. He wants to earn at least $168 for a new video game system. Determine the number of hou
solong [7]

Answer:

28 hours

Step-by-step explanation:

6x28=168

5 0
3 years ago
The position of a passenger train that is traveling at an initial speed of 14 feet per second and continues to accelerate can be
salantis [7]

Solving the system of equations, it is found that a viable time that the trains are side by side is given by:

B. 15 sec

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the equations are:

y = 14t^2

y = 130t + 1200

They will be side by side when:

14t^2 = 130t + 1200

14t^2 - 130t - 1200 = 0

It's solution is a quadratic function with coefficients a = 14, b = -130, c = -1200, hence:

\Delta = (-130)^2 - 4(14)(-1200) = 84100

x_1 = \frac{130 + \sqrt{84100}}{28} = 15

x_2 = \frac{130 - \sqrt{84100}}{28} = -5.71

Time is a non-negative measure, hence option B is correct.

More can be learned about a system of equations at brainly.com/question/24342899

5 0
2 years ago
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