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sergey [27]
3 years ago
14

A researcher thinks that a person's mood has an effect on how helpful that person is likely to be. To test this, the researcher

has participants come to the laboratory where they are first given a difficult test and then either heavily praised or strongly criticized for their test performance. As it happens, the researcher has one of two research assistants, one who is a bit rude and the other more friendly, running each participant through the experimental procedure. After the praise or critical feedback, each participant is asked to help the research assistant in moving some heavy boxes into another room. The researcher observes how many boxes each participant moves in helping the research assistant. One possible confound for this experiment is ________.
Mathematics
1 answer:
eimsori [14]3 years ago
5 0

Answer:

One possible confound for the experiment is the attitude of the research assistants.

Step-by-step explanation:

A confounder simply means a variable that has impact in influencing both the dependent variable and independent variable, causing a spurious association.

So, we can conclude that the attitudes of the research assistants have positive and negative impacts in determining the reactions of both participants in the experiment.

The rudeness of a research assistant will negatively impact the response of the participant allocated to him/her.

The calmness of the other research assistant will positively impact the response of the participant allocated to him/her.

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If (a^2 + b^2) (x^2 +y^2) = (ax + by )^2 then which relation is true?​
NikAS [45]

Answer:

Step-by-step explanation:

Hello,

Let's develop both expressions and try to re factorise.

\forall (a,b,x,y) \in \mathbb{R}^4  \\ \\ (a^2+b^2)(x^2+y^2)=(ax+by)^2\\ \\(ax)^2+(ay)^2+(bx)^2+(by)^2=(ax)^2+(by)^2+2(ax)(by)\\ \\ (ay)^2+(bx)^2-2(ay)(bx)=0\\ \\ (ay-bx)^2=0\\ \\ ay-bx=0\\ \\ \boxed{\sf \bf ay=bx}

Thanks

6 0
3 years ago
1-cos(12x)=<br> A. 2sin^2(6x)<br> B. 2cos^2(6x)<br> C. 2cos^2(12x)<br> D. 2sin^2(12x)
Y_Kistochka [10]
Cos(12x) = cos(6x+6x) = cos6xcos6x -sin6xsin6x = cos^2(6x) -sin^2(6x)

1 - cos(12x) = 1 - (cos^2(6x) -sin^2(6x)) = sin^2(6x) +cos^2(6x) - cos^2(6x) +sin^2(6x) = 2sin^2(6x)

so choice A. is right sure 
3 0
3 years ago
Read 2 more answers
The Remainder Theorem can be used as a shortcut to find the remainder when a function is divided by a binomial.
Brilliant_brown [7]

The Remainder Theorem is used to determine whether a linear binomial is a factor of a polynomial because it helps us factorize the polynomial more easily.

<h3>How to illustrate the theorem?</h3>

The remainder theorem states that if P(x) is a polynomial and x - a is a linear factor, the remainder when P(x) is divided by x - a is P(a). When P(a) = 0, then x - a is a factor of P(x).

Here, the remainder theorem is used to determine whether a linear binomial is a factor of a polynomial because it helps us factorize the polynomial more easily.

When the polynomial is divided by the linear factor, we obtain a polynomial of a lesser degree which can then be further factorized to obtain all the factors of our initial polynomial.

A linear binomial is the factor of a polynomial if the polynomial value is 0 at the zeros of the linear binomial

Let's assume a polynomial function is

P(x) = (x - 3)(x + 1)(x -2)

And a linear binomial is:

x - 3 = 0

We start by calculating the value of x in x - 3 = 0

l

x = 3

Next, we substitute x = 3 in P(x) = (x - 3)(x + 1)(x -2)

P(3) = (3 - 3)(3 + 1)(3 -2)

Evaluate

P(3) = 0

Since P(3) = 0, then the linear binomial x - 3 is a factor of P(x) = (x - 3)(x + 1)(x -2)

Learn more about polynomial on:

brainly.com/question/2833285

#SPJ1

6 0
2 years ago
What is 300 million divided by 1 thousand?
vlada-n [284]

Answer:

the answer is three hundred thousand

4 0
3 years ago
Read 2 more answers
What is 8.61×10−8 in decimal form?
Ierofanga [76]

Answer:

0.000000861

Step-by-step explanation:

5 0
4 years ago
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