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

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, the alternative hypothesis H₁: At least one of βⱼ ≠ 0 for j = 0,1,2,3 implies that percentage of students passing the proficiency test is related to all of the explanatory variables.