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Andrew [12]
3 years ago
9

Suppose the residuals for a data set containing 5 points were plotted on a residual plot. At most, how many of the 5 residuals c

ould be above the x-axis?

Mathematics
2 answers:
Masja [62]3 years ago
6 0

Answer with explanation:

A residual plot is the graphical representation of two variables that shows one of the variables that is the residuals on the vertical axis that is y axis, and the independent variable that is another variable on the horizontal axis.Residual plot is another name of Coordinate plane.

If Points are plotted on residual plane two kinds of model are Possible ,

1.→ A linear regression model for the data set  that is a straight line which is called a Random Pattern.

2→Otherwise A non-linear model that is U shaped or Inverted U shaped model.

→ If the model is Random or Non Random that is Linear or Non Linear, then At most that is all five points can lie above X axis.

Verdich [7]3 years ago
3 0
4 at most be above the  x-axis

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1-Suppose the path of a baseball follows the path graphed by the quadratic function ƒ(d) = –0.6d2 + 5.4d + 0.8 where d is the ho
jasenka [17]

Answer:

1. The correct option B.

2.The correct option A.

Step-by-step explanation:

The given function is

f(d)=-0.6d^2+5.4d+0.8

Where f(d) is the height of the ball at horizontal distance d.

Put f(d)=0, to find the distance where the ball touch the ground.

0=-0.6d^2+5.4d+0.8

Quadratic formula:

d=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Using the quadratic formula we get

d=\frac{-5.4\pm \sqrt{(5.4)^2-4(-0.6)(0.8)}}{2(-0.6)}

d=-0.146,9.146

Therefore the ball is in air between d=-0.146 to d=9.146.

The distance can not be negative, therefore the ball remains in the air between d=0 to d=9.146.

9.146\approx 9.15

Therefore the correct option is B.

2.

The given equation is

y=(x-1)^2+1                 .... (1)

The standard form of parabola is

y=a(x-h)^2+h             .... (2)

Where, a is constant and (h,k) is vertex.

On comparing (1) and (2), we get

a=1

h=1

k=1

Since the value of a is positive, therefore it is an upward parabola. The vertex of the parabola is (1,1).

Put x=0 in the given equation.

y=(0-1)^2+1

y=1+1=2

Therefore the y-intercept is (0,2) and option A is correct.

8 0
3 years ago
A fruit punch recipe requires 2 quarts pf orange juice to be mixed for every 5 quarts of apple juice. Max has 9 quarts of orange
Marrrta [24]

Answer:

22.5 quarts

Step-by-step explanation:

Let us find the ratio of orange juice to apple juice. The punch requires 2 quarts of orange juice mixed with 5 quarts of apple juice.

The ratio of orange juice to apple juice is therefore:

2 : 5 or 2/5

Max has 9 quarts of orange juice. By comparing with the ratio, this implies that:

2 / 5 = 9 / x

x = (9 * 5) / 2 = 22.5 quarts

He will need 22.5 quarts of apple juice.

6 0
3 years ago
please help!! geometry also might ask another question in the comments so be able to answer and I’ll mark you brainliest later :
Arada [10]

Coordinate of D: (2, -2)

Multiply x and y by 0.5

Answer: D = (1, -1)

8 0
3 years ago
A dice is rolled, then a coin is tossed. What is the probability of getting a 5 then tails?
Eduardwww [97]
I believe it would be 8.335%, but I could be wrong. Good luck.
5 0
4 years ago
a shipping box will be filled with two different machine parts. one type of machine part weights 0.15 ponds and the other weight
gulaghasi [49]
\frac{x}{2} =0.15 hope so this helps

8 0
3 years ago
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