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Rashid [163]
3 years ago
13

How can you evaluate whether the slope of the dependent variable with an independent variable is the same for each level of the

dummy variable?
Engineering
1 answer:
s2008m [1.1K]3 years ago
3 0

Answer:

By running multiple regression with dummy variables

Explanation:

A dummy variable is a variable that takes on the value 1 or 0. Dummy variables are also called binary

variables. Multiple regression expresses a dependent, or response, variable as a linear

function of two or more independent variables. The slope is the change in the response variable. Therefore, we have to run a multiple regression analysis when the variables are measured in the same measurement.The number of dummy variables you will need to capture a categorical variable

will be one less than the number of categories. When there is no obvious order to the categories or when there are three or more categories and differences between them are not all assumed to be equal, such variables need to be coded as dummy variables for inclusion into a regression model.

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Simplify the following expressions, then implement them using digital logic gates. (a) f = A + AB + AC (b) f = AB + AC + BC (c)
Tema [17]

<u>Explanation</u>:

(a)

f=A+A B+A C\\=A[1+B+C]=A \quad[1+x=1]\\F=A

No gate is required to implement this function

(b)

\begin{aligned}&\ f=A B+\bar{A} C+B C\\&\therefore f=A B+A C\end{aligned}                                  \begin{array}{l}(A B+\bar{A} C+B E=A B+\bar{A} C \\B C \text { is redendant })\end{array}

Note: Refer the first image.

(c)

\begin{aligned}f &=\overline{A+B}+A \bar{B}+B \bar{C} \\&=(\bar{A} \bar{B})+A \bar{B}+B \bar{C} \\&=\bar{B}[A+\bar{A}]+B \bar{C} \\& F=\bar{B}+B \bar{C} =\bar{B}+\bar{C}\end{aligned}    

Note: Refer the second image      

(d)

\begin{aligned}f=& A B \bar{c}+\overline{A+\bar{c}} \\=& A B \bar{c}+\bar{A} \bar{c}=\bar{A} B \bar{c}+\bar{A} c \\f=& \bar{A}[c+B \bar{c}] . \\& f=\bar{A} B+\bar{A} c=\bar{A}(B+c)\end{aligned}

Note: Refer the third image

(e)

\begin{aligned}f=& A \bar{B}+\bar{B} C+A \bar{B} \\&=\bar{B}[A+\bar{A}+c] \\&=\bar{B}[1+C]\end{aligned}

       f=\frac{}{B}

(f)

\begin{aligned}f &=A B C+A B D+A B C \\&=A B[C+C]+A B D \\&=A B+A B D \\&=B[A+A D] \\&=B[A+D] \\\therefore & A=B[A+D]\end{aligned}

Note: Refer the fourth image

                         

6 0
3 years ago
1. Represent each of the following combinations of units in the correct SI form using the appropriate prefix: (a) μMN, (b) N/μm,
Burka [1]

Answer:

Kindly check explanation

Explanation:

(a) μMN, (b) N/μm, (c) MN/ks2, and (d) kN/ms.

(a) μMN = (10^-6 * 10^6) = 10^(-6 + 6) = 10^0 = N

b) N/μm = N / 10^-6 m = 10^6 * N/m = MN/m

(c) MN/ks2 = 10^6N / (10^3 s)^2

10^6 N / 10^6s^2 = 10^6 * 10^-6 N /s^2 = N/s^2

D) kN/ms = 10^3N / 10^-3 s = 10^3 * 10^3 * N/s = 10^6N / s = MN/s

2)

a) 0.000431kg = 431 × 10^6 kg = 431 * 10^9g = 431Gg

b) 35.3 × 10^3 N

10^3 = kilo(K)

35.3 KN

C) 0.00532km = 5.32 * 10^3 km = 5.32 * 10^3 * 10^3 = 5.32 * 10^6 = 5.32Mm

3) Represent each of the following combinations of units in the correct SI form: (a) Mg/ms, (b) N/nm, and (c) mN/(kg⋅μs).

a) Mg/ms = 10^6g / 10^-3s = 10^6 * 10^3 g/s = 10^9 g/s = Gg/s

b) N/nm = N / 10^-9 m = 10^9 N/m = GN/m

c) mN/(kg⋅μs) = 10^6N / kg(10^-6s) = 10^12N/(kg.s)

= TN/(kg.s)

6 0
3 years ago
What are three demonstration drive tips for the vc-turbo engine?.
Oliga [24]

The three (3) demonstration drive tips for a VC-turbo engine are:

  1. Use your gears when overtaking and driving up a long hill.
  2. Warm up your engine before accelerating.
  3. Ensure your oil level is at the optimum gauge or level.

<h3>What is a VC-turbo engine?</h3>

A VC-turbo engine can be defined as a technologically-advanced internal combustion engine that is design and developed to be faster, especially by combining the torque and efficiency of an advanced diesel powertrain with the power of a high-performance gas engine.

<h3>The demonstration drive tips.</h3>

Basically, the three (3) demonstration drive tips for a VC-turbo engine include the following:

  1. Use your gears when overtaking and driving up a long hill.
  2. Warm up your engine before accelerating.
  3. Ensure your oil level is at the optimum gauge or level.

Read more on drive tips here: brainly.com/question/23968178

4 0
3 years ago
Question #4
Gemiola [76]

Answer:

The correct option is;

Fluid power systems are much more efficient with regards to energy costs and overall cost savings

Explanation:

The option that will provide a valid reason for the larger proportion of the consumers to change to the fluid power trucks from the diesel powered trucks is the possibility of increased efficiency in the cost of energy, and the cost savings to be made from making the switch to the fluid power trucks, due to the lower input required and the faster rate at which the consumer budget will be rebalanced leading to increased return on investment and improved rate of return.

5 0
3 years ago
Fill in the tables and find the equivalent resistance for the following circuits:
Dafna11 [192]

Answer:

12 32

Explanation:

3 0
2 years ago
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