While calculating a difference in difference, we run a regression which is as follows: lm( y ~ d1 +d2 + d3) where d1 and d2 are dummy variables and d3 is their interaction term. We thus get its coefficients according to the equation: Y = a + b*d1 + c*d2 + d*d3

What is the difference in difference estimator?
a. a+b+c+d
b. (d-c)-(b-a)
c. a
d. b

answer: i'm not sure

step-by-step explanation:

can you make your screen more see able?

then i might be able to .

answer: y = 3/2 x - 3

y = 1/8 x - 3/4 that would be your correct option

step-by-step explanation: w

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.