If the 1st person save 1/4 of total , 2nd person saves 2/3 and 3rd person saves 1/10 , which fraction left to pay for the birthday party.

One assumption underlying linear regression is that the x values are normally distributed.

This above statement is true.

Linear regression is a linear approach for modeling the relationship between a scalar response and one or more explanatory variables (also called dependent and independent variables). When there is one explanatory variable, it is called simple linear regression. If there are more than one, the process is called multiple linear regression. This concept differs from multivariate linear regression, which predicts multiple correlated dependent variables instead of a single scalar variable.

In linear regression, relationships are modeled using a linear predictor function in which the unknown model parameters are estimated from the data. Such models are called linear models. Most commonly, the conditional mean of the response is assumed to be an affine function of the values ​​of the explanatory variables (or predictors) given those values. In rare cases, a conditional median or another quantile is used. Like all forms of regression analysis, linear regression focuses on the conditional probability distribution of the response variable given the values ​​of the predictor variables, rather than the joint probability distribution of all variables, which is the domain of multivariate analysis.

1. Weekly Exogeneous:

It means that we can treat the predictor variable x as a fixed value rather than as a random variable. This means, for example, that the predictor variables are assumed to be error-free, ie not contaminated with measurement error. This assumption is not realistic in many situations, but omitting it makes the within-variable error model much more difficult.

2. Linearity:

This means that the mean response variable is a linear combination of the parameters (regression coefficients) and the predictor variables. . The predictor variables themselves can be arbitrarily transformed. In fact, we can add multiple copies of the same underlying predictor variable, each transformed differently.

3. Constant variance or Homogeneity:

This means that the error variance does not depend on the values ​​of the predictor variables. Therefore, for any given fixed value of the predictor, the variability of the response is the same no matter how large or small the response is. This is often not the case because variables with large mean values ​​usually have more variance than variables with small mean values.

4. Independence from:

This assumes that the response errors are uncorrelated. (True statistical independence is a stronger condition than just lack of correlation and is often unnecessary, but can be exploited when it is known to hold.) Generalized least squares, etc. Some methods in can handle correlated errors, but this usually requires significantly more data unless some kind of regularization is used to bias the model to accept uncorrelated errors Bayesian linear regression is a popular method for handling this problem.

5. Lack of Multicollinearity:

Predictors are not fully multicollinear. For the standard least-squares estimation method, the design matrix X must have perfect column rank p. Otherwise, the predictors are perfectly multicollinear, meaning there is a linear relationship between two or more predictors. This can be caused by erroneously duplicating variables in the data, using linear transformations of the variables together with the original variables, or using multiple variables in the model. It can be caused by inserting a linear combination. as their average. It is also possible that too little data is available relative to the number of estimated parameters.

Learn more about Linear Regression:

https://brainly.com/question/29665935

#SPJ4

Answer:

It is difficult to give a precise answer without more information, such as the thickness of the sauce and the desired coverage. However, if we assume that the sauce is being applied evenly and that a thin layer is desired, the amount of sauce needed to cover a 16" pizza would be approximately 50.24 in2. This is because the area of a circle with a diameter of 16" is approximately 50.24 in2. To calculate the area of a circle, you can use the formula A = πr^2, where A is the area, π is approximately 3.14, and r is the radius of the circle (which is half the diameter). In this case, the radius would be 8" and the area would be approximately 50.24 in2.

Step-by-step explanation:

If each student can only choose one elective, picking both is impossible, making the probability 0.

There is no chance of picking a single kid for music and art electives (0).

Information disclosed:

A high school's students are participating in electives.

Since each student is only allowed to choose one elective course from the options provided, they can either choose music or art as their elective.

Therefore, it is impossible to choose a student who has chosen to study art and music.

As a result, there is no chance of picking a student for whom both music and art are electives (0).

For more information visit:

brainly.com/question/13604758

#SPJ4

The revenue function for the given marginal revenue function

R'(x) = 0.06x² - 0.05x + 138 be

R(x) = 0.02x³ - 0.025x² + 138x

Given, a marginal revenue function,

R'(x) = 0.06x² - 0.05x + 138

we have to find the demand function

as, we know that the demand function can be find by integrating the marginal revenue function with respect to the variable x.

So, as the marginal revenue function is given,

R'(x) = 0.06x² - 0.05x + 138

On integrating with respect to x, we get

R(x) = 0.06x³/3 - 0.05x²/2 + 138x + C

where C is an arbitrary constant.

Also, it is given that

R(0) = 0

So, R(0) = 0.06(0) - 0.05(0) + 138(0) + C

0 = C

R(x) = 0.06x³/3 - 0.05x²/2 + 138x + 0

R(x) = 0.02x³ - 0.025x² + 138x

So, the revenue function be R(x) = 0.02x³ - 0.025x² + 138x

Hence, the revenue function be R(x) = 0.02x³ - 0.025x² + 138x

Learn more about Application of Derivatives here https://brainly.com/question/25120629

#SPJ4

Answer:

o answer this question, we need to apply the transformations in the reverse order. So first, we need to apply the translation according to the rule (x+3,y-3). This means that the coordinates of the triangle will become A'(7,2), B'(0,3), and C'(2,5). Next, we need to reflect the triangle across the line y=0. This means that the y-coordinates of the triangle will become negative. So the coordinates of the triangle will become A''(7,-2), B''(0,-3), and C''(2,-5). Finally, we need to rotate the triangle 90 degrees. In a standard cartesian coordinate system, a rotation of 90 degrees counterclockwise is equivalent to the transformation (x, y) -> (-y, x). So the final coordinates of the triangle will be A'''(-2,7), B'''(-3,0), and C'''(-5,2).

Answer:

337 = 3

Step-by-step explanation:

Multiply by LCM

337 = 3

and the sides are not equal so I guess there is no answer but

337 = 3

Answer:

4.    (2)   0

5.    (1)   1/25

Step-by-step explanation:

Definition: a^0 = 1

4.

8(x + 11)^0 - 2x^0 + 6x =

= 8 × 1 - 2 × 1 + 6 × (-1)

= 8 - 2 - 6

= 0

5.

[(5^3)^2]/[(5^2)^4] =

= 5^6 / 5^8

= 5^(-2)

= 1/5^2

= 1/25

The new equation of the function y = 2^x + 4 shifted 10 units to the left is y = 2^(x-10) + 4

translation moves a shape left, right, up, or down but does not turn. The translated shapes (or the image) appear to be the same size as the original shape, indicating that they are congruent.

Since the function is shifted 10 units to the left, it means the x coordinate of the function is reduced by 10.  making the exponent (x) to become (x - 10)

So the function's new equation is y = 2^(x-10) + 4

In conclusion, the new equation is  y = 2^(x-10) + 4

Learn more about translation: https://brainly.com/question/12861087

#SPJ1

Answer: 11.25

Step-by-step explanation: you just find out what is 25% of 45.00

Answer:

11.25

Step-by-step explanation:

turn 25 into a decimal and then multiply 45

Answer:

Step-by-step explanation:

?

Answer:

[tex]2 \sqrt[]{7} , and -2\sqrt[]{7}[/tex]

Step-by-step explanation:

or:

x=5.29150262…,−5.29150262

Answer:

C (8,6)    A (2,14)

Step-by-step explanation:

(2+m)/2 = 5

2(2+m)/2 = 5 x 2

2+m = 10

m = 10 - 2

m = 8

(-6+n)/2 = 0

2(-6+n)/2 = 2 x 0

-6 + n = 0

n = 6

(-8+x)/2 = -3

2(-8+x)/2 = -3 * 2

-8 + x = -6

x = -6 + 8

x = 2

(-2+y)/2 = 6

2(-2+y)/2 = 6 * 2

-2 + y = 12

y = 12 + 2

y = 14

The image of point P(4,6) after a reflection over the x-axis is given as follows:

P'(4,-6).

The coordinates of the point P in this problem are given as follows:

P(4,6).

Meaning that:

The rule for a reflection over the x-axis is given as follows:

(x,y) -> (x,-y).

Meaning that the x-coordinate remains constant, while the y-coordinate has the signal exchanged.

Applying the rule, the coordinates of the image are given as follows:

Then the coordinates of the image after the reflection are given as follows:

P'(4,-6).

More can be learned about reflections over the x-axis at brainly.com/question/21603787

#SPJ1

The probability that a zoomy express bus arrives as schedule if it departs as schedule is 0.85.

The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates the event's impossibility and 1 indicates certainty. An event's likelihood of occurring increases with its probability.

now , let D = depart on time and A = arrives on time

given that ,

P(D) = 80% = 0.80

P(A∩D) = 68% = 0.68

P(A/D) = [tex]\frac{0.68}{0.80}[/tex]

           =  [tex]\frac{68}{80}[/tex]

           =  [tex]\frac{17}{20}[/tex]

           =  0.85

Hence , the probability is 0.85.

Learn more about Probability from

https://brainly.com/question/13604758

#SPJ4

At n = 75 the value of 3/5 * n will be 45

What is Fraction?

A fraction is a portion of a whole or, more broadly, any number of equal pieces. In ordinary English, a fraction denotes the number of components of a specific size.

Solution:

Since we are given that 3/5 of n is 45

We can for an equation as 3/5 * n = 45

and to solve this we neeed to use cross multiplication method for the same

Cross Multiplication

n = 45*5/3

n = 15*5

n = 75

To learn more about Fraction from the given link

https://brainly.com/question/78672

#SPJ1

Answer:

x = -136

Step-by-step explanation:

x + 2 =  7/8 x -15   Multiply all the way through by 8

8x + 16 = 7x -120  Subtract 7x from both sides

x + 16 = -120  Subtract 16 from both sides

x =  -136

Answer: -0.66667

Step-by-step explanation:

To find the equation of a plane passing through two points and perpendicular to another plane, use the cross product.

First calculate the vector between the two given points,

then use the cross product to find a vector that is perpendicular to both the vector between the two points and the equation of the other plane.

Finally, use the two points and the perpendicular vector to find the equation of the plane.

Learn more about equation of the plane here

https://brainly.com/question/27190150

#SPJ4

(a) The first four terms of the geometric sequence are 3, 9, 27, 81.

(b) The product of any two terms of the sequence is present in the sequence.

A geometric sequence is one where each phrase is obtained by multiplying the term before it by the same number.

Formula to find nth term of geometric sequence is aₙ = a₁ rⁿ⁻¹. The common ratio is expressed as the value r.

Given that,

The nth term of the geometric sequence uₙ = 3ⁿ.

(a)

The first term of the sequence u₁ = 3¹

Second term of the sequence u₂ = 3² = 9

Third term of the sequence u₃ = 3³ = 27

And the fourth term of the sequence u₄ = 3⁴ = 81

The four terms of the sequence are 3, 9, 27, 81.

(b)

To prove that product of two term is also present in the sequence.

Product of first two terms = 3 x 3² = 3 x 9 = 27

27 is present in the sequence.

Further, product of next two terms,

9 x 27 = 243 = 3⁵

3⁵ will also present in the sequence.

Therefore, product of any two terms is present in the sequence.

To know more about Geometric sequence on:

brainly.com/question/11266123

#SPJ1

If the level of significance is 10 %, then the potential type of statistical error is type II error.

What is statical error?

The term "error" (also known as "statistical error") refers to the discrepancy between a value obtained through a data gathering procedure and the population's "actual" value. The data are less representative of the population the higher the inaccuracy.

In the given test,

The p-value = 0.24

Level of significance (a) = 0.10

Here,

0.24 > 0.10

P-value > level of significance

Therefore, We failed to reject the null hypothesis that is actually false

This is type II error,

The type II error occurs when one fails to reject a null hypothesis that is actually false itself.

To know more about statical error, go to link

https://brainly.com/question/28008941

#SPJ4

The value of x, if In triangle ABC, AC = 18, BC = 30 is 24.

A circle is a two-dimensional shape created by a collection of points that are spaced uniformly or uniformly apart from a fixed point (center) on the plane.

Given:

In triangle ABC, AC = 18, BC = 30

As we know, if a tangent is drawn from the circle then it will form a right-angled triangle thus, ∠ ABC = 90°,

Calculate the value of x by using Pythagoras' theorem as shown below,

[tex]AB^2 = BC^2 - AC^2[/tex]

Substitute the values

x² = 30² - 18²

x = √(900 - 324)

x = √576

x = 24

To know more about circle:

brainly.com/question/266951

#SPJ1

Answer:

[tex]\huge\boxed{\sf 1}[/tex]

Step-by-step explanation:

f(x) = 3x - 4

Put x = 3

f(3) = 3(3) - 4

f(3) = 9 - 4

Also,

g(x) = x²

Put x = 2

g(2) = (2)²

Subtract Eq. (2) from Eq. (1)

= 5 - 4

[tex]\rule[225]{225}{2}[/tex]

Answer:

F(3) -g(2) = 1

Step-by-step explanation:

F(3)= 3(3) -4= 5

g(2)= [tex]2^{2}[/tex] = 4

f(3) -g(2)= 5-4 =1

To ensure the sample is representative of the population as a whole, try to use some random samples.

A sample refers to a small quantity that is examined to get the knowledge of how the whole product/population will be.

Now, we need feedback from our clients. To ensure that our sample is representative of the population as a whole, we should include clients with different attributes.

Like, choosing 10 clients all living in the same place, same gender, and same age group will be the worse sample.

The best way to do this is to select samples randomly, ensuring that our sample includes people with different ages, gender, height, disabilities(if any) and statuses, etc.

So, A randomized sample is the best for ensuring that the sample is representative of the population as a whole.

To know more about samples, go to the link:

https://brainly.com/question/22920224

#SPJ4

The required simplified value of the given expression is x = 0.67.

Given that,
To determine the simplified solution of the expression, [tex]\left(3\sqrt{3}\right)^{-x}+1=\frac{1}{3}\left[27^x-5\right][/tex]

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,

In order to simplify the given expression, we have to transpose the number across the equal sign as exponents numbers tobe either side and constant on the other side.

[tex]=\left(3\sqrt{3}\right)^{-x}+1=\frac{1}{3}\left[27^x-5\right]\\=\left(\left(3\sqrt{3}\right)^x\right)^{-1}+1=\frac{1}{3}\left[\left(\left(3\sqrt{3}\right)^x\right)^2-5\right]\\= 2 / 3\\= 0.67[/tex]

Thus, the required simplified value of the given expression is x = 0.67.

Learn more about simplification here:

https://brainly.com/question/12501526

#SPJ1

Therefore, by using trigonometry and ratios of trigonometry the height of the airplane is 426 feet.

Trigonometry is the study of angles and the angular relationships of planar and three-dimensional figures. Trigonometric functions (also known as circular functions) include the cosecant, cosine, cotangent, secant, sine, and tangent.

With this drawing, we can see that this is a right triangle, which can be solved using some trigonometry. To solve the height, we must use the tangent:

for the diagram see the image.

[tex]tanA = \frac{opposite}{adjecent} \\tan (12) = \frac{opposite}{adjecent} \\\frac{0.213}{1} = \frac{height}{2000}\\height = 2000(0.213)\\\\[/tex]

height = 426 feet

Therefore, the height of the airplane is 426 feet.

To know more about trigonometry visit:

https://brainly.com/question/22698523

#SPJ4

By using the quadratic equation that can be written with the given information:

x² -7x + 10 = (x - 5)*(x - a)

We will see that the length is:

L  = x - 2

Remember that for a rectangle of length L and width W, the area is given by the product:

A = L*W

Here we know that:

The area is: x² -7x + 10

The width is: x -5

The length will be another factor of the quadratic equation, and we know that it should be of the form:

(x - a)

Using the area formula, we will get:

x² -7x + 10 = (x - 5)*(x - a)

Expanding the right side we get:

x² -7x + 10 = x² -5x -ax + 5a

x² -7x + 10 = x² + (-5 - a)*x + 5a

Comparing like terms, we can see that:

-5 - a = -7

5a = 10

The solution of both of these is:

a = 7 - 5 = 2

a = 10/5 = 2

Then the length of the rectangle is:

L = (x - 2)

Learn more about quadratic equations:

https://brainly.com/question/1214333

#SPJ1

Answer: The correct answer is A. Addition

Step-by-step explanation:

Let's solve for x in 2x+4y=10

Step 1: Add -4y to both sides.

2x+4y+−4y=10+−4y

2x=−4y+10

Step 2: Divide both sides by 2.

2x/2 = −4y+10/2

x = −2y +5

Now let's solve for x in 5x+4y = -12

Step 1: Add -4y to both sides.

5x+4y+−4y=−12+−4y

5x=−4y−12

Step 2: Divide both sides by 5.

5x/5 = −4y−12/5

x = −4/5y + −12/5

Here is what solving for Y looks like

Let's solve for y in 2x+4y=10

Step 1: Add -2x to both sides.

2x+4y+−2x=10+−2x

4y=−2x+10

Step 2: Divide both sides by 4.

4y/4 = −2x+10/4

y = −1/2x + 5/2

Now let's solve for y in 5x+4y = -12

Step 1: Add -5x to both sides.

5x+4y+−5x=−12+−5x

4y=−5x−12

Step 2: Divide both sides by 4.

4y/4 = −5x−12/4

y = −5/4 x−3

addition. thanks for the points. /j