Exhibit 10-2 A Manager of a Hotel Chain Is Interested in Investigating

question 89

Multiple Choice

Exhibit 10-2
A manager of a hotel chain is interested in investigating whether there is a relationship between staff labor hours and bed-day occupancy incurred by a hotel in a month.The manager randomly selected 17 of the hotels in the chain across the country and recorded, for each of the hotels, the staff's total labor hours for the month of July and the number of bed-days of occupancy for that month. (A hotel has occupied one "bed-day" if one bed is occupied (rented) for an entire day.) The manager is interested in seeing if the labor hours incurred can be predicted from the number of bed-days of occupancy on a monthly basis.
The sample data were analyzed using Excel.Shown below is part of the regression analysis output.

-Refer to Exhibit 10-2.For the estimated regression equation y = a + bx,what is the value of b?

• A)-28.106
• B)0.049
• C)97.2
• D)1.117

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Definitions:

Dimensional-Analysis

A method in physics and engineering to check the consistency of equations and to perform unit conversions.

Conversion Factor

A numerical value used to convert quantities expressed in one unit into another unit of measure.

Minutes

A unit of time equal to one sixtieth of an hour, or 60 seconds.