The owner of a New York City moving company, Harry Hasselflibber has typically u

Question

The owner of a New York City moving company, Harry Hasselflibber has typically used an estimator to determine the number of labor hours needed for the move. This has proved useful in making bids in the past, but he would like to be able to develop a more reliable estimate that would be more accurate in predicting the labor hours. In a preliminary effort to provide a more accurate means of estimation, he has collected data for a number of moves in which the origin and destination were within the borough of Manhattan in New York City so that the travel time was an insignificant portion of the labor hours worked, The results are shown below. How many estimates did Harry include in this analysis? A. 36 B. 35 C. 33 D. 3 E. 2 What is the value of the pooled variance estimate? A 6926.6 B. 3463.3 C. 844 8 D. 25.6 E. 5.06 What percent of the total fluctuation in the number of labor hours is explained by this regression model? A. 94.408% B. 89.129% C. (1 - 1.254E-16) middot 100% D. (1 - 0 85538) middot 100% For an increase of one room, what impact does this model predict Harry should reflect in the approximate number of labor hours he bids if the number of cubic feet to be moved remains the same? A. 2.1 B. 1.6 C. 0.9 D. 0.8 E. 1.6 For an increase of 100 cubic feet, what impact does this model predict Harry should reflect in the approximate number of labor hours he bids if the number of rooms to be moved remains the same A. 25 6 B. 8.9 C.6.6 D. 5.6 E. 0.8

Explanation / Answer

1) Number of estimators = 36

2) 25.06 is the pooled variance.

3) R^2 = 89.129% variation explained

4) Coefficient of rooms is -1.62, E option.

5) 100 * 0.056 = 5.6

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