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 as the dependent variable,
-Referring to Scenario 18-8, you can conclude that mean teacher salary has no impact on the mean percentage of students passing the proficiency test at a 5% level of significance using the 95% confidence interval estimate for

Question

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  as the dependent variable,   
-Referring to Scenario 18-8, you can conclude that mean teacher salary has no impact on the mean percentage of students passing the proficiency test at a 5% level of significance using the 95% confidence interval estimate for

Quizplus · Accepted Answer

If the 95% confidence interval estimate for the coefficient of mean teacher salary includes zero, then we can conclude that the variable has no significant impact on the dependent variable. Since the statement says that the mean teacher salary has no impact at a 5% level of significance using the 95% confidence interval estimate, we can infer that the confidence interval includes zero. Thus, the answer is true. Since the confidence interval estimate for the coefficient of mean teacher salary includes 0, it indicates that mean teacher salary has no statistically significant impact on the mean percentage of students passing the proficiency test at a 5% level of significance.

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