How to do this step by step

Mathematics

2 answers:

n200080 [17]2 years ago

8 0

Add 0.8a to 0.2a and you get -8 = a

lisabon 2012 [21]2 years ago

4 0

Add 0.8a to both sides.
-8 = a

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Consider the following data points.

Hoochie [10]

Answer:

the equation of the least-squares line for the data is: $\hat Y=9.3+1.3x$

Step-by-step explanation:

In a simple linear regression model, such as, $\hat Y=b_0+b_1x$ , the coefficients bo and b1 are estimated through the method of least squares by the use of the equations:

$b_1=\frac{S{xy}}{S_x^2}\\\\b_0=\bar{y}+b_1 \bar{x}$

For the data provided you have to:

$S_{xy}=\frac{\sum {(x_i-\bar x)(y_i-\bar y)}}{n-1}=3.25\\\\S_x^2=\frac{\sum {(x_i-\bar x)^2}}{n-1}=2.5\\\\\bar y=5.4$ , thus:

$b_1=\frac{3.25}{2,5}=1.3\\\\b_0=5.4+1.3(3.0)=9.3$

the equation of the least-squares line for the data is:

$Y=9.3+1.3x$

8 0

2 years ago

Read 2 more answers

Solve this system of liner equations.separate the -x and y - values with a comma. 2x=96-14y 9x=40-14y

Vaselesa [24]

A) 2x=96-14y
B) 9x=40-14y
Rearranging algebraically

A) 2x +14y = 96
B) 9x +14y = 40

Multiplying equation A by -1
A) -2x -14y = -96 Then adding it to equation B
B) 9x +14y = 40
7x = -56
x = -8

2*-8 = 96 -14y
-16 -96 = -14y
-112 = -14y
y = 8

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2 years ago

Which statements about the Extreme Value theorem are true?

SCORPION-xisa [38]

Answer:

do you have any statments?

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2 years ago

Hi how yall doiiinnn

Maru [420]

Pretty good, How about you

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