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Masteriza [31]
2 years ago
7

In which of the following do you expect the correlation coefficient to be negative?

Mathematics
1 answer:
sashaice [31]2 years ago
4 0

From the four graphs presented, it is expected the only one with a negative correlation coefficient is the third graph or graph c.

<h3>What is a negative correlation?</h3>

This occurs when the two variables analyzed go in opposite direction, which means one increases and the other decreases.

<h3>How is this represented in a graph?</h3>

In a graph, a negative correlation coefficient is related to a negative slope.

This negative slope can be seen in the third graph or graph C.

Learn more about negative slope in: brainly.com/question/16295806

#SPJ1

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According to the tree diagram below, what is the probability that someone buys a book that is hardcover and nonfiction
Rasek [7]

Whenever you have a decision tree like this, the probability of reaching a specific leaf is the multiplication of the probabilities of each step you have to reach the leaf.

So, in order to reach the "hardcover and nonfiction" leaf, we have to take the "buys hardcover" branch (probability 0.35), and then the "buys nonfiction" branch (probability 0.55).

Given what we said above, the probability for "hardcover and nonfiction" is

0.35\cdot 0.55=0.1925

5 0
3 years ago
What is the sum of -2 and -7?
user100 [1]
The sum of this is -9
7 0
3 years ago
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- 3 + 3x = 2x – 13 <br><br> I have to use more characters...
DENIUS [597]

- 3 + 3x = 2x – 13

Bring -3 to the right side of the equation by adding 3 to both sides

(- 3 + 3) + 3x = 2x – 13 + 3

0 + 3x = 2x - 10

3x = 2x - 10

Bring 2x to the other side by subtracting 2x to both sides

3x - 2x = 2x - 2x - 10

x = -10

Check:

-3 + 3(-10) = 2(-10) - 13

-3 + (-30) = -20 - 13

-33 = -33

Hope this helped!

~Just a girl in love with Shawn Mendes

6 0
2 years ago
(True or False) The Long Division symbol is the same as the Radical (Root) symbol?
Dmitriy789 [7]

Answer:

false

Step-by-step explanation:

3 0
3 years ago
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Is each expression a polynomial?<br><br> Drag and drop each expression to the correct box.
Scorpion4ik [409]

Answer:

  see attached

Step-by-step explanation:

A polynomial is the sum of terms with variables having positive integer exponents. Coefficient numbers need not be integers.

The term 3/x^4 = 3x^-4 is not such a term, so the expression containing it is not a polynomial.

7 0
3 years ago
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