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jeka57 [31]
4 years ago
7

In this scatterplot the individuals are states. The variable "cig" is the number of cigarettes sold per person in the state in 1

960. The variable "lung" is the deaths from lung cancer per 100,000 people in the state in 1990. For the state of Wyoming (WY), Cig =28.04, the observed lung value is 15.92, and the predicted lung value is 21.33. Compute the residual for this point.
Mathematics
1 answer:
Ipatiy [6.2K]4 years ago
5 0

Answer:

e= -5.41

Step-by-step explanation:

Hello!

In linear regression, a residual value is a distance between the observed values and the regression line.

The residual value (e) is calculated as the difference between the observed value (Y) and the predicted value (^Y).

e= Y - ^Y

e= 15.92 - 21.33 = -5.41

I hope it helps!

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An isosceles trapezoid ABCD with height 2 units has all its vertices on the parabola y=a(x+1)(x−5). What is the value of a, if p
Nadya [2.5K]

Answer:

  a=-\dfrac{3+9\sqrt{3}}{52}\approx −0.357470332079

Step-by-step explanation:

Here, we assume that point A is (-1, 0) and point B is (z, 2). Since angle BAD is 60°, we have ...

  2/(z+1) = tan(60°) = √3

  z = (2/√3) -1

Putting the value of z into the equation for the parabola lets us find "a".

  2 = a(z +1)(z -5) = a(2/√3)(2/√3 -6)

Then ...

  a = 2/(4/3 -12/√3) = (6√3)/(4√3 -36)

  a = -(3+9√3)/52 ≈ −0.357470332079

6 0
3 years ago
If Ryan gives 1/4 of his 48 cards to end a how many cards does he give Anna
Dafna11 [192]
Ryan gives 12 cards.
5 0
3 years ago
Factor each.<br><br><br> Please help!
Naddika [18.5K]

Answer:

1) The factors of  x^2-3x+2=0 are \mathbf{(x-1)(x-2)=0}

Option C is correct.

3) The factors of  x^2+2x-8=0 are \mathbf{(x-2)(x+4)=0}

Option B is correct.

Step-by-step explanation:

1) Factor : x^2-3x+2=0

For factoring we need to break the middle term, such that there sum is equal to middle term of expression and product is equal to product of first and last term.

The middle term : -3x

We can break them as (-2x)( -x)

Solving:

x^2-3x+2=0\\x^2-2x-x+2=0\\x(x-2)-1(x-2)=0\\(x-1)(x-2)=0

So, factors of  x^2-3x+2=0 are \mathbf{(x-1)(x-2)=0}

Option C is correct.

3) Factor: x^2+2x-8=0

For factoring we need to break the middle term, such that there sum is equal to middle term of expression and product is equal to product of first and last term.

The middle term : 2x

We can break them as (4x)( -2x)

Solving

x^2+2x-8=0\\x^2+4x-2x-8=0\\x(x+4)-2(x+4)=0\\(x-2)(x+4)=0

So, factors of  x^2+2x-8=0 are \mathbf{(x-2)(x+4)=0}

Option B is correct.

7 0
3 years ago
Bobby had 36 books in his locker. Some were library books, some were textbooks, and the rest were telephone books. The number of
emmainna [20.7K]
Make variables for each
L = library books
P = telephone books
T = text books

so.... L+P = 2T 
now we have to fill in numbers
8 0
4 years ago
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Answer:

1. dave has a low chance of rollerblading if he is focusing on his career.

Step-by-step explanation:

7 0
4 years ago
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