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aleksley [76]
3 years ago
14

Any body want to talk

Mathematics
2 answers:
zhuklara [117]3 years ago
7 0

Answer:

yoooo

Step-by-step explanation:

how's today going for ya!

Liula [17]3 years ago
4 0

Answer:

wasssssssssssup

have a good day :)

Step-by-step explanation:

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Assume that you have paired values consisting of heights​ (in inches) and weights​ (in lb) from 40 randomly selected men. The li
HACTEHA [7]

Answer:

R^2 = r^2 = 0.445^2= 0.198

B. The coefficient of determination is 0.1980, 19.8​% of the variation is explained by the linear​ correlation, and 80.2​% is explained by other factors.

Step-by-step explanation:

Previous concepts

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.  

Solution to the problem

In order to calculate the correlation coefficient we can use this formula:  

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

On this case we got that r =0.445

The determinaton coefficient is just:

R^2 = r^2 = 0.445^2= 0.198

And we can put it on % and we got 19.8%. And represent the variation explained by a linear model. The best option on this case would be:

B. The coefficient of determination is 0.1980, 19.8​% of the variation is explained by the linear​ correlation, and 80.2​% is explained by other factors.

Since the explained variation is 19.8% and the remain 100-19.8= 80.2% is explained by other factors.

6 0
2 years ago
A plant produces sport drinks, which must be within 0.15 fluid ounces of the advertised 10 fluid ounces on the label. If x repre
Sphinxa [80]

Answer:

|x − 10| = 0.15; x = 9.85 ounces

Step-by-step explanation:

its common math skills but yea.

4 0
1 year ago
There are 8 students on a minibus. 5 students are boys. What is the fraction of students?
pav-90 [236]
The fraction of boys to total students would be 5/8

The fraction of boys to girls would be 5/3
4 0
3 years ago
Read 2 more answers
[128 ÷ (6 + 4 – 2)] X 8
scoray [572]

Do parentheses first:

6 +4-2 = 8

Now do brackets:

128/8 = 16

Now multiply:

16 x 8 = 128

The answer is 128

6 0
3 years ago
Read 2 more answers
X-4y=-17 and y=4x +8 solve by graphing please and show the solution
nikitadnepr [17]

Answer:

The answer to your question is (-1, 4) The lines cross in one point so they have only one solution.

Step-by-step explanation:

Data

Equation 1     x - 4y = -17

Equation 2    y = 4x + 8

Solve for y

Equation 1          y = -x/-4 - 17/-4

                          y = x/4 + 17/4

Equation 2         y = 4x + 8

See the graph below

These lines cross in point (-1, 4), so that is the only one solution.

If the lines were the same line they would have infinite solutions

                   

6 0
3 years ago
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