Help me please help me

The Linear probability model always contains heteroskedasticity when the dependent variable is binary unless all of the slope parameters are zero. It's true.

Probability is the branch of mathematics concerning numerical descriptions of how probable an event is to do, or how likely it's that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates the impossibility of the event and 1 indicates certainty.

In statistics, a direct probability model is a special case of a double retrogression model. Then the dependent variable for each observation takes values that are moreover 0 or 1.

The introductory sapience is that the direct probability model can be used whenever the relationship between probability and log odds is roughly direct over the range of modeled chances.

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The remaining length of the board is 8 11/16 feet.

Length of board = 20 3/4 feet

Length that was cut off = 12 1/16 feet

To obtain the length of the remaining part of the board ;

We subtract the length that was cut off from the total length of the board ;

(Total length - length that was cut off)

20 3/4 = 83/4

12 1/16 = 193/16

(83/4 - 193/16) =

L. C. M of 4 and 16 = 16

(332 - 193)/16 = 139/16

139/16 = 8 11/16 feet

The remaining length of the board is 8 11/16 feet.

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Answer: first you have to find the speec of the bicycle by using the formula speed = distance/time

120/5=24miles per h

speed of the motorcycle is 3 times as fast as the bicycle so 24x3 = 72miles per hour is the speed for the motorcycle.

Step-by-step explanation:

Answer:

Step-by-step explanation:

ax²+6x+c=0

disc=6²-4×a×c=36-4ac≥0,(∵ it has two real solutions.)

36-4ac≥0

36≥4ac

4ac≤36

ac≤9

On solving the question we can say that - dependent variable = Daily minutes of secondhand smoke exposure independent variables = Race, Year of Education, and Gender Currently suffering with asthma

The variable that symbolizes the amount being changed in the experiment is known as the independent variable. The variable x is frequently utilized to symbolize the equation's independent variable.

part(B):

What the difference group indicates is how the dependent and independent variables are related.

dependent variable = Daily minutes of secondhand smoke exposure

independent variables = Race, Year of Education, and Gender

Currently suffering with asthma

part(C):

Given the information,

The appropriate response is,

What is the correlation between the number of minutes of daily secondhand smoke exposure and the presence of an asthma diagnosis?

part(D):

Given the information,

The appropriate response is,

What is the correlation between the number of minutes per day of secondhand smoke exposure and the presence of an asthma diagnosis

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Answer:

3 s

Step-by-step explanation:

Using this quadratic, max height will occur at t = -b/2a

       t = - 48 / (2*-16) = 1.5 seconds    to max height

           then another 1.5 seconds to fall to the ground

                for a total of 3 seconds.

Another way    d = 0    when it hits the ground

                           0 = -16 t^2 + 48 t + 0

                           0 = - 16t ( t +3 )       again shows t = 3s   (or 0 before it is launched)        

Answer:

------------------------------------

Solve each and combine:

The common interval is x > 3.

Answer:

Wyzant

ALGEBRA WORD PROBLEM

Kieryn T. asked • 01/10/18

The length of a rectangle is 5 cm more than twice the width. The perimeter of the rectangle is 34 cm. Find the dimensions of the rectangle.

I am having trouble with this problem. I asked my parents and they didnt know what to do. I am stuck and i have looked through my notes and nothing has helped.

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Mikaila D. answered • 01/10/18

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The dimensions of the rectangle are two unknowns: The length "l" and the width "w"

The perimeter of a rectangle is found as P = 2*l + 2*w

We also know that the length is 5cm more than twice the width. l = 2*w + 5

These two equations gives us a system of linear equations.

P = 2*l + 2*w

l = 2*w + 5

We can use substitution to replace the "l" in the first equation with 2*w + 5

P = 2*(2*w + 5) + 2*w

P = 4*w + 10 + 2*w

P = 6*w + 10

We know that P = 34cm

34 = 6*w + 10

Subtract 10 from both sides

24 = 6 * w

Divide both sides by 6

4 = w

Now that we know the width, we can find the length by substituting 4 for "w" in the second equation.

l = 2*4 + 5

l = 8 + 5

l = 13

The price of the adult tickets will be $20.

The price of the child tickets will be $18

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

Three adult and four children pay $132.

And, Two adult and three children pay $94.

Now,

Let The price of the adult tickets = x

The price of the child tickets = y

So, We can formulate;

Three adult and four children pay $132.

⇒ 3x + 4y = $132  ..(i)

And, Two adult and three children pay $94.

⇒ 2x + 3y = $94  ..(ii)

From (i),

⇒ 3x + 4y = $132

⇒ 3x = $132 - 4y

⇒ x = 44 - 4/3y

Substitute above value in equation (ii),

⇒ 2x + 3y = $94

⇒ 2(44 - 4/3y) + 3y = $94

⇒ 88 - 8/3y + 3y = $94

⇒ 1/3y = 94 - 88

⇒ 1/3y = 6

⇒ y = 18

And, From (ii),

⇒ 2x + 3y = $94

⇒ 2x + 3 × 18 = $94

⇒ 2x = 94 - 54

⇒ 2x = 40

⇒ x = 20

Thus, The price of the adult tickets = $20.

The price of the child tickets = $18

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The correct statement regarding bias in either distribution is given as follows:

R is biased, and W is unbiased.

We use the graphs showing the sampling distributions for the two different point estimates to identify bias.

Then the criteria to determine that there will be bias is given as follows:

From the graphs given at the end of the answer, we have that:

As the point estimate of estimator R is not at the center, it contains bias, and thus the fourth statement is correct.

The graphs are given by the image shown at the end of the answer.

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Answer:

20

Step-by-step explanation

25 / 5 = 5 (each part of the chapter)

5 * 4 = 20 (the number of pages he has read

Answer:Model A and 19%

Step-by-step explanation:

I saw the explanation on study island

The correct model for the probability is given as follows:

Model B.

The probability that Mat will hit at least one home run in a single game is about 0.19 = 19%.

A probability is calculated by the division of the number of desired outcomes by the number of total outcomes.

Mat hits a home run once every ten times at bat, and gets exactly two times at bat in every game, hence the total number of outcomes is of:

10² = 100.

This is why Model B is the correct model, as it has two trials of 10 outcomes, and each trial has a 0.1 probability of success.

The probability that he hits no home runs is of:

0.9² = 0.81.

Hence the probability of hitting at least one home run is of:

1 - 0.81 = 0.19 = 19%.

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This equation can be solved to find the vector x that is mapped to the zero vector - OD. x

The given matrix A is a 3x3 matrix, so the vector x is a 3-dimensional vector. To determine which vector x maps to the zero vector, 0, we can set up the equation:

Ax = 0

This equation can be solved to find the vector x that is mapped to the zero vector, 0. Solving the equation, we find that x = (0, 0, 0). Thus, the answer is OD. x = (0, 0, 0).

Matrix is a set of numbers arranged into rows and columns. It is commonly used in mathematics, science and engineering to represent a variety of data. Matrix can also be used to represent relationships between different variables.

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The value of the variable 'w' for the given equation 7 ( w + 7 )³ = 7(6³)  is equal to w = -1.

As given in the question,

Given equation is equal to :

7 ( w + 7 )³ = 7(6³)

Divide both the side of the equation by 7 we get,

⇒ 7 ( w + 7 )³ / 7 = 7(6³) /7

⇒( w + 7 )³ = (6³)  

Take cube root both the side of the equation we get,

⇒∛( w + 7 )³ = ∛(6³)  

⇒ w + 7 = 6

Now subtract 7 from both the side of the equation we get,

⇒w + 7 - 7 = 6 - 7

⇒ w = -1

Therefore, the value of the variable 'w' for the given equation is equal to w = -1.

The complete question is:

Solve this equation:

7 ( w + 7 )³ = 7(6³)

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Yes, there is something wrong with the function.

Here, two integer variables, num1, and num2 are taken by this function as arguments. Then it assigns the value of num1 to a newly declared integer variable, temp. It then assigns the value of temp to num2, and the value of num2 to num1, thus swapping the values of the two variables effectively.

Here, the problem with the function is that the function operates on copies of the original variables rather than the variables themselves.

The variables num1 and num2 are passed by value, which means that to swap the values of the original variables, the function should use pointers or pass the variables by reference.

For example

void swap (int* num1, int* num2) {

int temp = *num1;

*num1 = *num2;

*num2 = temp;

}

Here, the function to modify the original variables directly as the variables num1 and num2 are passed as pointers.

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Complete Question

The following function should swap the values contained in two integer variables, num1, and num2. What, if anything, is wrong with this function?

void swap(int num1, int num2)

{

int temp = num2;

num2 = num1;

num1 = temp;

}

in a hypothesis test, two approaches are p-value and critical value.The null hypothesis should contain the research hypothesis.

a. The standard error of the mean is 0.14.

b. With a 95% probability, the margin of error is approximately 1.96.

c. If the sample mean is 9 hours, then the 95% confidence interval is approximately 8.74 to 10.20 hours.

d. Two approaches to drawing a conclusion in a hypothesis test are p-value and critical value.

e. The research hypothesis should be given as the null hypothesis as a general rule.

The standard error of the mean is 0.14. With a 95% probability, the margin of error is approximately 1.96. For a sample mean of 9 hours, the 95% confidence interval is 8.74 to 10.20 hours. When drawing a conclusion in a hypothesis test, two approaches are p-value and critical value. The null hypothesis should contain the research hypothesis.

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The average wait time before a person can use the GottaGo toilet is three minutes. This is calculated by subtracting the average usage time (two minutes) from the average time between uses (five minutes).

1. Calculate the total time the toilet is occupied by multiplying the average usage time (two minutes) by the average time between uses (five minutes). This gives a total time of 10 minutes.

2. Calculate the total time the toilet is available by subtracting the total time the toilet is occupied (10 minutes) from the total time between uses (five minutes). This gives a total time of five minutes.

3. Calculate the fraction of time the toilet is occupied by dividing the total time the toilet is occupied (10 minutes) by the total time between uses (five minutes). This gives a fraction of two-fifths (2/5).

4. Convert the fraction to a percentage by multiplying the fraction by 100. This gives a percentage of 40%. Therefore, the GottaGo toilet is occupied 40% of the time.

Time occupied = 2 minutes * 5 minutes = 10 minutes

Time available = 5 minutes - 10 minutes = 5 minutes

Fraction of time occupied = 10 minutes / 5 minutes = 2/5

Percentage of time occupied = 2/5 * 100 = 40%

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The area of the forest would decrease to 1360 km²

Divide the value of an investment at the end of the period by its value at the beginning of that period. Raise the result to an exponent of one divided by the number of years. Subtract one from the subsequent result. Multiply by 100 to convert the answer into a percentage.

Given here, an area of 2100 km² and each year it decreases by 4.25%

in the first year, the area of the forest becomes  (2100 - 4.25/100 × 2100)                                            

                                                                               = 2010.75 km²

in the second year, the area becomes 2100 × (1-4.25/100)²

                                                                       = 1925.29 km²

similarly, in the tenth year, the area becomes 2100 ×  ( 1-  4.25/100)¹⁰

                                                                         =  1360 km²

Hence, the area of the forest reduces to  1360 km²

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Answer:

987

Step-by-step explanation:

Clue 4: There is no 2, 4, 5.

Clues 1 & 2: There is no 1.

7 must be on the right.

_ _ 7

Clue 5: 9 is in the first or second place

9 _ 7   or   _ 9 7

937 or 987 or 397  or 897

Try all 4 possibilities above through all 5 clues.

Only 987 works.

Answer: 987

The equation of line in the point slope form is y = 2x + 8

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data ,

Let the equation be represented as A

Let temperature be denoted as x

Let the time be denoted as y

Let the initial temperature be = 0°F

Let the final temperature be = 1°F

Let the initial time be = 8 : 00 AM

Let the final time be = 10 :00 AM

And , the first point be P = P ( 0 , 8 )

The second point be Q = Q ( 1 , 10 )

Now , the slope of the equation is given as

Slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Substituting the values in the equation , we get

Slope m = ( 10 - 8 ) / ( 1 - 0 )

Slope m = 2

Now , the equation of line is given as y - y₁ = m ( x - x₁ )

Substituting the values in the equation , we get

y - 8 = 2 ( x - 0 )

y - 8 = 2x

Adding 8 on both sides of the equation , we get

y = 2x + 8

Therefore , the value of A is y = 2x + 8

Hence , the equation is y = 2x + 8

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Answer: 3

Step-by-step explanation:

Answer: false

Step-by-step explanation:

Im going to assume you are asking if 2x-6 is divisible by x+3

In this case, it is false.

x+3 * 2 = 2x+6

2x+6[tex]\neq[/tex]2x-6

The power series representation for the given function is   1+ 9x + (9x) ^ 2 + (9x) ^ 3 + .... (9x) ^ n (where 0 ≤ n ≤ ∞).

Let u = 9x.

Return to the series above and replace each u with a 9x directly:

Where 0 n , 1 + 9x + (9x) 2 + (9x) 3 +.... (9x) n

Here, the interval of convergence is easily found. It follows that

|9x| 1 -1/9 x 1/9 because we know that geometric series must have | u | = 1

Finally, we may leverage the fact that geometric series have a sum to get the sum: S = a / (1 - u).

Here, u = 9x and a = 1

Therefore, the total is simply S = 1 /(1 - 9x).

Any sum can be calculated provided x is between -1/9 and x and less than 1/9.

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The equation to represent money spend and the quantity of salad and pizza is E = $5.00*x + $2.00*y

where x represent the quantity of bowl of salad and y represent the quantity of slice of pizza.

What is equation in mathematics?

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.

Equations come in two varieties: identities and conditional equations. All possible values of the variables result in an identity. Only certain combinations of the variables' values make a conditional equation true.

According to the given question:

The equation to represent money spend and the quantity of salad and pizza is E = $5.00*x + $2.00*y

where x represent the quantity of bowl of salad and y represent the quantity of slice of pizza.

The table to represent the result of above equation is

Budget (in $)             Salad (bowl)         Pizza (slices)

 40.00                              0                            20

 40.00                              2                            15

 40.00                              4                            10

 40.00                              6                             5

 40.00                              8                             0

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Answer:

None of the above.

No assumptions can be made because we do not know if the function is continuous or differentiable on those intervals.