Using the textbook example of 420 California school districts and the regression of testscores on the student-teacher ratio, you find that the standard error on the slope coefficient is 0.51 when using the heteroskedasticity robust formula, while it is 0.48 when employing the homoskedasticity only formula. When calculating the t-statistic, the recommended procedure is to A. use the homoskedasticity only formula because the t-statistic becomes larger B. first test for homoskedasticity of the errors and then make a decision C. use the heteroskedasticity robust formula D. make a decision depending on how much different the estimate of the slope is under the two procedures

Answers

Answer 1

Answer:

The answer is "Option C".

Step-by-step explanation:

Robust standard errors or generic White-Huber mistakes depending on this procedure. This is also recognized as the Variance Sandwich Stimator because of the appearance of the formula. Therefore, which is under homoskedasticity, robust error terms were appropriate, in which the standard deviations of its predictor variables are non-constant and are tracked across different values or linked to pre-time periods of an exponential function.


Related Questions

4
A system of equations is shown below.
5x + 2y = -15
2x - 2y = -6
What is the solution to the system of equations?
A
(-3,0)
B
(0, -3)
С
(-3,6)
D (6,-3)

Answers

Answer:

the answer for this question is

A(-3,0)

Which expression is equivalent to the given expression?

8(34a)−8


34a

6a

8(34a−1)

34a−1

Answers

Answer:

8(34a-1)

Step-by-step explanation:

Hope this helps :)

Answer:

8(34a-1)

Step-by-step explanation:

lines a and b are parallel If the slope of the line a is 1/4 . what is the slope of line b ?​

Answers

Its also 1/4 because when lines are parallel, this means they have the same slope

The daily temperature in the month of March in a certain city varies from a low of 24 degrees F to a high of 40 degrees F. Find a sinusoidal function to model daily temperature and sketch the graph. Let t=0 correspond to noon, when the highest temperature of the day occurs.
Please help I'm in the test. ​

Answers

Answer:

d(t)=8cos((pi/12)t)

Step-by-step explanation:

I think this is correct...

A=8 b/c 40-24=16, 16/2 = 8

B=2pi/per, 2pi/24, B = pi/12

Simplify:

4y + (2y – 4)

Answers

6y - 4
hope that helps

Find the exact value of csc 5pi/6

Answers

Answer:

csc 2 (csc [tex]\frac{5\pi}{6}[/tex] = csc 150 = csc 30 = csc 2)

Step-by-step explanation:

csc [tex]\frac{5\pi}{6}[/tex] is in the 2nd Quadrant where only sin, and csc are positive.

csc [tex](\frac{5\pi}{6})=csc (\pi -(\frac{5\pi}{6}))=csc(\frac{5\pi}{6})[/tex]

but csc [tex]\frac{5\pi}{6}[/tex] = [tex]\frac{1}{sin (\pi/6)} = \frac{1}{sin 30} = \frac{1}{1/2} =2[/tex]

Help please urgent sadly

Answers

Answer:

3x+6

Step-by-step explanation:

3x+6
Please mark this as brainliest thank you

PLEASEEEEEEE HELPPPPPPPPPPppp

Answers

Answer:

gstmhsiskgs sg sgw5ket5 l d

What is cot(ZB)?
Reduce fractional answers to lowest terms.
A
25
24
с 7

Answers

Answer:

cot∠B = 7/24

General Formulas and Concepts:

Math

Simplifying

Trigonometry

[Right Triangles Only] SOHCAHTOA[Right Triangles Only] cotθ = 1/tanθ = adjacent over opposite

Step-by-step explanation:

Step 1: Define

Angle θ = ∠B

Adjacent Leg = 7

Opposite Leg = 24

Step 2: Find

Substitute in variables [cotangent]:                                                                 cot∠B = 7/24

[8-(-12)]÷(2x-2)-(-8)

Answers

Answer:

3

Step-by-step explanation:

30 %of 50 pidhdbdjduwywggdhfnfjrhdvdvdndjdjf​

Answers

Answer:

15

Step-by-step explanation:

50 x .3

Answer:15

Step-by-step explanation:

2x-3y=3
find the slope and y intercept

Answers

Try going into a slope calculator, they usually help if you just type online ‘slope calculator’

marking brainliest!!

Answers

Answer:

A

Step-by-step explanation:

A is your answer because

the exponent is 2 for the two equations first u have to multiply your exponents and then you multiply your 4 and 3 from that u get your answer ,but answer is A

Hope this helps:)

Pls mark brainlist

Answer:

A) [tex]\sqrt{4^{2} +3^{2} }[/tex]

Step-by-step explanation:

One side is 4 cm, the other side of the triangle is 3 cm because you subtract 4 from the 7 length. To find hypotenuse, you do side 1 squared + side 2 squared.

Hope it helps!

Is 4 5/12 a rational number

Answers

Answer:

Nope! It's irrational.

it would be if it was 53/12 tho!

My teacher likes to give me stuff I haven’t learned

Answers

Answer:

haha same

Step-by-step explanation:

i think the answer is B

Answer:

hmm not so difficult

Step-by-step explanation:

I think it's B

There is a quadrilateral with vertices A (-4,0), B (-3, 4), C (2,6), and D (2,3).
Is this a parallelogram?

Answers

No, i didn’t feel like graphing it out but it isn’t a parallelogram. It’s a trapezoid which isn’t parallelogram

you need 1661.06 ft squared of carpet to completely cover the floor or a round room. what is the diameter of the room.

Answers

Answer:

46 ft

Step-by-step explanation:

A = π×d²/4

d² = √4×A /π

= √4×1611.06 / 3.14

=√ 2116

= 46 ft

Answer:

46 feet squared

Step-by-step explanation:

A = π×d²/4

d² = √(4×A /π)

= √(4×1611.06 / 3.14)

= 2116

= 46 ft squared



Joan climbed down 330 feet to the bottom of a cave. Next, she climbed up 385 feet. What was her final elevation? Joan was
feet above sea level

Answers

55 feet above (-330+385)

simplify(x^5^2/ x^2)

Answers

25 I think is the correct answer

Answer:

x^23

Step-by-step explanation:

Cancel the common factor of x^5^2 and x^2

Factor x^2 out of x^5^2

(x^2) (x^5^2-2) / (x^2)

cancel common factors

x^25-2 = x^23

Select all the ratios that are equivalent to 8 : 6. *

4:3
6 to 8
16:12
10:8
7 to 5

Answers

Answer:

4:3 and 16:12

Step-by-step explanation:

Mark monitors the growth of a colony of bacteria in his biology lab. He begins with a colony of 100 bacteria. After 24 hours, the colony has grown to 305

bacteria. After 24 more hours, the colony consists of 897 bacteria. What is a reasonable estimate of how many bacteria he can expect to count in the colony

when he returns 24 hours later?

Answers

Answer:

After next 24 hours, bacterial population would be [tex]1433[/tex]

Step-by-step explanation:

The initial bacterial count at time = 0  was [tex]100[/tex]

At [tex]= 24[/tex] hours, the bacterial count increased up to [tex]305[/tex]

At [tex]= 48[/tex] hours, the bacterial count increased up to [tex]897[/tex]

As we know that

[tex]P = P_0 * e^{rt}[/tex]

The growth rate of bacterial population is equal to

[tex]r = \frac{log\frac{P}{P_0} }{t}[/tex]

Substituting the above values we get -

[tex]r = \frac{log\frac{897}{305} }{24}\\r = 0. 0195[/tex]

Count of bacteria after next 24 hours

[tex]P = 897 * e^{ 0.0195 * 24)\\P = 1433[/tex]

HELP
Erick spent $ 21.91, including sales tax, on 2 T-shirts and 3 pairs of socks. The t-shirts cost $ 6.75 each and the total sales tax was $ 1.03. Complete the table with the correct prices.

Answers

Answer:

t shirts were $6.75 each.

socks were $4.71 each

sales tax was $1.03

brainliest??... i took my time out to help u

Answer: So Im basicaly just replying to get points sorry

Look i sure someone will answer it soon good luck buddy I have faith in you

Step-by-step explanation:

Anna has fabric that is 1/4 yard long. She needs to cut the fabric into pieces that are 1/8 yard long. How many 1/8 yard long pieces will she have

Answers

Answer:

2

Step-by-step explanation:

1/4= .25

1/8= .125

so 1/4÷ 1/8=2

Find the slope of a line parallel to the line given

m=-7/8

A. 8/7
B. 7/8
C. -7/8
D. -8/7

Answers

the answer is C hope this helped

On the graph of f(x)=sinx and the interval [0,2π), for what value of x does f(x) achieve a minimum? Choose all answers that apply.

Select all that apply:
0
π/4
π/2
π
3π/2

Answers

Answer:

3π/2

Step-by-step explanation:

See attached graph

for every 5 coins Carmen gets, she gives her brother Frankis 2 coins. If Carmen gets 9 coins, how many do her brother have?

Answers

Answer:

6 coins

Step-by-step explanation:

For every 5 coins Carmen recieves, she gives off 2 to her brother, leaving her with 3 coins, 3x3=9, 2x3=6

The answer is 6.
The 2 coins that Frankis get multiply by 3

need help this is due in 30 min and boost up my grade to a 87


An administrative assistant can type 100 words in 90 seconds. What is the assistants rate of typing in word per minute....
you might have to round so

Answers

Answer:

66.67 (or 66 2/3) words per minute

Step-by-step explanation:

90 seconds is equal to 1.5 minutes.

100 words/1.5 minutes = 66 2/3 words/minute

(also good luck on boosting your grade :) )

आकत हा
(क) समीकरणों 2x+3y = 18 तथा. X-2y=2 का हल है।​

Answers

Answer:

Y=-2/3x+6

y= 1/2x+ -1

No

Step-by-step explanation:

One morning, the temperature outside was -3°F. By 5:00PM the temperature had decreased 15°F. What was the temperature at 5:00 PM?
a. -18°F b. -12°F C. 12°F d. 18°F​

Answers

Answer:

A.

Step-by-step explanation:

If the temperature was -3°F at first, but had decreased 15°F degrees by 5:00pm, it would be -18°F.

-3 - 15 = -18

Correct me if I end up being wrong.

Two forces with magnitudes 300 pounds and 450 pounds, with an angle of 60° between them, act upon an object. What is the approximate magnitude of the resultant force?

Answers

The resultant force in the example presented is approximately 774 pounds.

What is magnitude?

The magnitude or size of a mathematical item defines whether it is larger or smaller than other objects of the same kind in mathematics.

Formally speaking, the size of an object is the visible outcome of an ordering—of the class of objects to which it belongs.

Consider the following scenario: the force is 10 N in the east.

The direction is indicated by "towards the east," while the force is indicated by "10."

Magnitude can be thought of as simply the "value" or "amount" of any physical quantity.

So, an object is under the influence of two forces with respective magnitudes of 300 pounds and 450 pounds and an angle of 60 degrees between them.

F₁=300 pounds, F₂=450 pounds and θ=60°

Fr=√300²+450²+2×300×450×cos60°

= √90000+502500+13500×0.5

= √90000+502500+6750

= √599250

= 774 pounds

Therefore, the resultant force in the example presented is approximately 774 pounds.

Know more about magnitude here:

https://brainly.com/question/24468862

#SPJ1

Answer: C. 653.91 pounds.

Step-by-step explanation:

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