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stellarik [79]
3 years ago
10

Using 50 observations, the following regression output is obtained from estimating y = β0 + β1x + β2d1 + β3d2 + ε. Coefficients

Standard Error t Stat p-value Intercept −0.81 0.36 −2.25 0.0293 x 2.94 1.20 2.45 0.0182 d1 −13.00 16.25 −0.80 0.4278 d2 5.52 1.50 3.68 0.0006 a. Compute yˆ for x = 262, d1 = 1, and d2 = 0; compute yˆ for x = 262, d1 = 0, and d2 = 1. (Round your answers to 2 decimal places.) yˆ x = 262, d1 = 1 and d2 = 0 x = 262, d1 = 0 and d2 = 1
Mathematics
1 answer:
pickupchik [31]3 years ago
3 0

Answer:

The answer is "789.03 and 806.16".

Step-by-step explanation:

y\^ \ \ = -0.45 + 3.78(x)  -11.88(d_1) + 5.25(d_2)

For point a:

Calculating the value for y\^  \ \  x = 212,\ \  d_1 = 1, and  \ \ d_2 = 0

y\^  = -0.45 + 3.78(212)  -11.88(1) + 5.25(0)

     = -0.45 + 801.36 -11.88 + 0\\\\= 789.03  

For point b:

Calculating the value of y\^ \ \ for \ \ x = 212, \ \ d_1 = 0, and \ \ d_2 = 1

y\^  = -0.45 + 3.78(212)  -11.88(0) + 5.25(1)  

    = -0.45 + 801.36 -0 + 5.25\\\\= 806.16

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The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the
GuDViN [60]
Given:
r = radius = 4
h = height = 12
dr = error in radius = 0.2

What we want to find
dV = error in volume

Use the derivative to find the differential dV
V = pi*r^2*h
dV/dr = d/dr[ pi*r^2*h ]
dV/dr = 2pi*r*h
dV = 2pi*r*h*dr
dV = 2pi*4*12*0.2
dV = 19.2pi

So if the error in measuring the radius is +-0.2 inches, then the error in the cylinder volume is +-19.2pi cubic inches (we either measure the volume to be 19.2pi cubic inches too big, or 19.2pi cubic inches too small)

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

Final Answer: Plus or minus 19.2pi cubic inches

Note: your teacher may want you to drop the "plus or minus" part
5 0
3 years ago
Directions: Solve the following by multiplying by the inverse of the fractional coefficient. 1. \frac{2}{5} t = 20 2. \frac{7}{8
coldgirl [10]

The answer of the following options are as 50, 64, 36, 40, 100, 9, 12, 12 100, 27, 150 42, 50 72, 28.3.

<h3>How to interpret the fraction?</h3>

Suppose the fraction is proper (the numerator is smaller than the denominator).

Let it be

\dfrac{a}{b}

Then, we can interpret it as:

a parts out of b parts of a thing.

1. \dfrac{2}{5} t = 20\\\\t = 20 \times \dfrac{5}{2}\\\\t= 50

2. \frac{7}{8} p = 56\\\\p = 56 \times \frac{8}{7} \\\\ p= 64

3. \frac{5}{6} x = 30 \\\\x = 30 \times \frac{6}{5}  = 36

4. \frac{1}{2} x = 20\\\\x = 20 \times 2 = 40

5. \frac{3}{5} s = 60\\\\s = 60 \times \frac{5}{3} = 100

6. \frac{1}{3} t = 3 \\\\t = 3\times 3 = 9

7. \frac{3}{4} x = 9\\\\x = 12

8. \frac{11}{12} x = 11\\\\x = 11 \times 12/11 = 12

9. \frac{8}{10} t = 80\\\\t = 80 \times 10/8 = 100

10. \frac{p}{3} = 9 \\\\p = 9 \times 3 = 27

11. \frac{n}{5} = 30\\\\n = 30 \times 5 = 150

12. \frac{6a}{7} = 36 \\\\a = 36 \times 7/6 = 42

13. \frac{1}{2} t + 3 = 28\\\\t = (28 - 3)2 = 50

14. \frac{1}{6} r = 12\\\\r = 12\times 6 = 72

15. \frac{11}{12} b = 32\\ \\b = 32 \times 11/12 = 29.33

Learn more about fraction here:

brainly.com/question/27010538

#SPJ1

3 0
2 years ago
2+2894939837748493866274849956996964994773627228010487475829​
S_A_V [24]

Answer:

2894939837748493866274849956996964994773627228010487475831

Step-by-step explanation:

u add two to that long a*s number

7 0
4 years ago
Read 2 more answers
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Mazyrski [523]

Answer:

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5 0
3 years ago
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Please help gotta get this gradae up
aleksklad [387]

Answer:

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Step-by-step explanation:

i graphed the function on desmos and matched it

8 0
3 years ago
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