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

question 206

Multiple Choice

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

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Definitions:

Motor Load

The amount of power a motor needs to perform its task, reflecting the mechanical demand placed on it.

Automatic Restart

A feature in machinery that allows it to automatically resume operation after an interruption or stop.

Power Outage

A power outage is the loss of the electrical power supply to an area, can be due to various reasons like storms, faults in the electrical system, or maintenance work.

Manual Motor Starters

Electrical devices designed to manually start and stop motors, providing protection against overload and short circuits.