TABLE 12-9 It Is Believed That, the Average Numbers of Hours Spent

question 145

Multiple Choice

TABLE 12-9
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 Microsoft 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: 2.051E-05 = 2.051 * 10-0.5 and 5.944E-18 = 5.944 * 10-18.
-Referring to Table 12-9, 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

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