Reference no: EM1311865
Interpretation of simple linear regression:
Suppose you are interested in estimating the effect of hours spent in an SAT preparation course (hours) on total SAT score (sat). The population is all college-bound high school seniors for the particular year.
(i) Suppose you are given a grant to run a controlled experiment. Explain how you would structure the experiment in order to estimate the casual effect of hours on sat.
(ii) Consider the more realistic case where students choose how much time to spend in a preparation course, and you can only randomly sample sat and hours from the population. Write the population model as:
sat = β0 + β1 hours + u
Where, as usual in a model with an intercept, we can assume E (u) = 0. List at least two factors contained in u. are these likely to have positive or negative correlation with hours?
(iii) In the equation from part (ii), what should be the sign of β1 if the preparation course is effective?
(iv) In the equation from part (ii), what is the interpretation of β0?
|
Purpose a cash flow
: Purpose a cash flow profile that shows the net cash flows for each time period (i.e., time 0, 1, 2, 3, and 4). Calculate the NPV of the project.
|
|
Minimize cost in the long run
: Illustrate what is the cost of producing 10 units in the short run? First conclude how much labor is needed.
|
|
Describe sustainable and conventional agriculture
: For each of the following concepts provide a definition, a complete explanation as to their significance, and a practical example.
|
|
Based a variable costing approach
: Based a variable costing approach, how would you maximize profits and Based on a throughput costing approach, how would you maximize profits?
|
|
Interpretation of simple linear regression
: Suppose you are given a grant to run a controlled experiment. Explain how you would structure the experiment in order to estimate the casual effect of hours on sat.
|
|
Compute the speed of the air track carts
: The air-track carts in the figure are sliding to the right at 1.0 m/s. The spring between them has a spring constant of 120 N/m and is compressed 4.5 cm. Compute the speed of the air track carts held by a string together.
|
|
Description of sustainability first
: Reflecting back on what you learned about sustainable management practices throughout this quarter; determine 5 activities that illustrate sustainable management of resources that you pursue in your everyday life.
|
|
Professional sports players are generally paid
: Professional sports players are generally paid much more than farmers, factory workers, engineers also teachers.
|
|
What is the acceleration due to gravity
: A uniform solid sphere of radius 0.503 m and mass 15.7 kg turns counter clockwise (when viewed from above) about the vertical axis through its center. Find its vector angular momentum when its angular speed is 3.08 rad/s. Wouldn't you use the formula..
|