TABLE 14-15 the Superintendent of a School District Wanted to Predict the Predict

question 151

Multiple Choice

TABLE 14-15
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, X₂= Salaries and X₃= Spending:

-Referring to Table 14-15, which of the following is the correct null hypothesis to test whether daily mean of the percentage of students attending class has any effect on percentage of students passing the proficiency test, taking into account the effect of all the other independent variables?

• A) H₀: = β₀ = 0
• B) H₀: = β₁ = 0
• C) H₀: = β₂ = 0
• D) H₀: = β₃ = 0

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Definitions:

UV Radiation

Ultraviolet radiation is a form of energy traveling through space, emitted by the sun, and has shorter wavelengths than visible light, capable of causing skin damage.

Dissolved Pollutants

Substances that are fully dissolved in water, making them particularly difficult to remove from aquatic environments.

Water Buoyancy

The ability or tendency of an object to float in water or another fluid, determined by the object's density relative to that of the fluid.

Fluctuations In Temperatures

Variability or changes in temperature over a certain period of time, which can occur due to various environmental factors.