SCENARIO 13-9
It is believed that, the average numbers of hours spent studying per day (HOURS) during undergraduate education should have a positive linear relationship with the starting salary (SALARY, measured in thousands of dollars per month) after graduation. Given below is the Excel output for predicting starting salary (Y) using number of hours spent studying per day (X) for a sample of 51 students. NOTE: Only partial output is shown.

Note: 2.051 E - 05 = 2.051*1 0-5 and 5.944 E -18 = 5.944 *10 -18 .
-Referring to Scenario 13-9,the estimated change in mean salary (in thousands of dollars)as a result of spending an extra hour per day studying is
A)-1.8940
B)0.7845
C)0.9795
D)335.0473

Question

SCENARIO 13-9
It is believed that, the average numbers of hours spent studying per day (HOURS) during undergraduate education should have a positive linear relationship with the starting salary (SALARY, measured in thousands of dollars per month) after graduation. Given below is the Excel output for predicting starting salary (Y) using number of hours spent studying per day (X) for a sample of 51 students. NOTE: Only partial output is shown.

Note: 2.051 E - 05 = 2.051*1 0-5 and 5.944 E -18 = 5.944 *10 -18 .
-Referring to Scenario 13-9,the estimated change in mean salary (in thousands of dollars)as a result of spending an extra hour per day studying is
A)-1.8940 
B)0.7845 
C)0.9795 
D)335.0473

Quizplus · Accepted Answer

The estimated slope coefficient for HOURS is 0.9795, indicating that on average, for each extra hour spent studying per day, the starting salary is expected to increase by 0.9795 thousand dollars (or $979.50).

SCENARIO 13-9 It Is Believed That, the Average Numbers of Hours Spent