Suppose you run a regression of house transaction prices on the dummy variable indicating whether the house is installed with a modern electronic heating system. Suppose you do this over the last 20 years, and you nd that the coecient has increased in the last 5 years. In the context of the model discussed in the lecture, discuss two important reasons what is the underlying driving force of the increased regression coecient.

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

Acomposition of transformations maps δxyz to δx"y"z". the first transformation for this composition is , and the second transformation is a 90° rotation about point x'.

Which two transformations are applied to pentagon abcde to create a'b'c'd'e'? (4 points) translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the x-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the y-axis translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the y-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the x-axis