SCENARIO 18-8 the Superintendent of a School District Wanted to Predict the Predict

question 99

True/False

SCENARIO 18-8
The superintendent of a school district wanted to predict the percentage of students passing a sixth- grade proficiency test.She obtained the data on percentage of students passing the proficiency test (% Passing),daily mean of the percentage of students attending class (% Attendance),mean teacher salary in dollars (Salaries),and instructional spending per pupil in dollars (Spending)of 47 schools in the state.
Following is the multiple regression output with Y = % Passing as the dependent variable, X₁ =% Attendance, X ₂ = Salaries and X₃ = Spending:

-Referring to Scenario 18-8,there is sufficient evidence that instructional spending per pupil has an effect on percentage of students passing the proficiency test while holding constant the effect of all the other independent variables at a 5% level of significance.

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Definitions:

Parallelogram Linkage

A linkage in the form of a parallelogram that connects a recirculating ball gearbox to the steering knuckle.

Suspension

The system in a vehicle that connects the wheels to the rest of the car, providing a smooth ride by absorbing bumps and vibrations from the road.

Gearbox

A mechanical device used in vehicles for varying power transmission and torque between the engine and the wheels, often by utilizing gears of different sizes.

Steering Linkage

A group of parts in the steering system that transmit motion from the steering gear to the wheels, enabling directional control of the vehicle.