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Kruka [31]
2 years ago
11

A researcher performs a study in which he gives testosterone to 100 randomly chosen men and observes that 50% of them report fee

ling more motivated and invigorated one week later. Can this researcher conclude based on these findings that testosterone increases feelings of motivation and vigor
Mathematics
1 answer:
SOVA2 [1]2 years ago
5 0

This researcher  cannot conclude based on these findings that testosterone increases feelings of motivation and vigor.

<h3>What is Research?</h3>

Research can be defined as the process of  investigating or making findings so as to reach or draw a conclusion based on the findings.

Research can also be defined as the process of collecting data, analyzing and interpreting the data collected in order to reach a conclusion.

Based on the given scenario the researcher cannot conclude that testosterone increases feelings of motivation and vigor based on his finding as their no enough data and evidence to support is findings.

Inconclusion this researcher  cannot conclude based on these findings that testosterone increases feelings of motivation and vigor.

Learn more about research here:brainly.com/question/968894

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At school athletic events you can buy 3 drinks and 2 hot dogs for $4.80 or you can buy 1 drink and 1 hot dog for $2.00. How much
mariarad [96]
Let the cost of each drink is $x and the cost of each hot dog is $y.
According to the given data, 3 drinks and 2 hot dogs cost $4.80. In equation form, we can write it as:

3x+2y=4.80

1 drink and 1 hot dog costs $2.00. In equation form, we can write it as:

x+y=2
x=2-y

Using this value of x in first equation, we get:


3(2-y)+2y=4.80 \\ &#10;6-3y+2y=4.80 \\ &#10;6-y=4.80 \\ &#10;y=6-4.80 \\ &#10;y= 1.20

Thus the cost of one hot dog is $1.20
6 0
3 years ago
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Pavel [41]
It’s B.
Distribute the 7a and multiply it with the 3a and -4 a. With the exponents you add them.
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3 years ago
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I drink coaster in the shape of a cylinder has a volume of approximately 95.43 cm³ and the radius of 4.5 cm. Approximately how m
kotykmax [81]
24x is the answer this is because it’s cool
7 0
3 years ago
A factory has three machines making energy drinks. When all three machines are running, 520 drinks are made each hour. When only
Vinil7 [7]

Let A, B and C be the amount machines A, B and C, respectively, produce each hour alone.

With all three machines together produce 520 drinks each hour, we know that the addition of the amount that each produces each hour is equal to 520, that is.

A+B+C=520_{}

Now, similarly, machines A and B produce together 320 drinks each hour, so the sum of the amounts A and B produce each hour is equal to 320, so:

A+B=320

If machine C produce 30 more drinks than B each hour, than the amount of B plus 30 will be the amount of C:

C=B+30

So, we got the system of equations:

\begin{gathered} A+B+C=520 \\ A+B=320 \\ C=B+30 \end{gathered}

To solve, notice that A + B is known, because of the second equation, so we can substitute A + B by 320 in the first equation:

\begin{gathered} (A+B)+C=520 \\ 320+C=520 \\ C=520-320=200 \end{gathered}

Now, we can substitute C into the third equation and solve for B:

\begin{gathered} C=B+30 \\ 200=B+30 \\ B+30=200 \\ B=200-30=170 \end{gathered}

And, finally, we can substitute B into the second equation and solve for A:

\begin{gathered} A+B=320 \\ A+170=320 \\ A=320-170=150 \end{gathered}

Answers:

First box:

A+B+C=520

Second box:

A+B=320

Third box:

C=B+30

Fourth box:

150

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1 year ago
The product of 7 and a number, all subtracted from 10
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Answer: i think the answer is -3

Step-by-step explanation:

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