please type the answers so I can be able to read it and show work it is mandator
ID: 3292424 • Letter: P
Question
please type the answers so I can be able to read it and show work it is mandatory
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. 94.480% B. 89.129% C. (1 - 1.254E-16) * 100% D. (1 - 0.85538) * 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 Is this model doing a better job of predicting the number of labor hours Harry should did than if he used the average number of labor hours spent per move? A. No, because the P-value of the intercept is only 0.8554. B. No, because the P-value of the variable for the number of rooms moved is only 0.4363. C. Yes, because the P-value of the variable for the number of cubic feet moved is 1.5022 times 10^-7. D. Yes, because the P-value of the F-statistic is 1.2541 times 10^-16 If Harry wanted to test whether the number of rooms was significant in predicting the labor hours involved in each move, which of the following output numbers from the computer printout should he use? a. 0.4363 B. 0.8554 C. 0.8913 D. 1.5022 times 10^-7 E. 1.2541 times 10^-16.Explanation / Answer
47. this is no of obs in the data. which is 35
48. Standard error gives the pooled variance - 5.059 or 5.06
49. This is given by Rsquare - 89.129%
50. A decrease by coeff of room = -1.62
51. This is Coeffof CubicFeetMoved * Inc. in room size = 5.6
52. There is incomplete info on this question. we are being asked to comapre previous mode of which we dont have any info. However, the closest answer is D, as regression is significant and the model seems to hold good for prediction. D is the right answer.
53. Please look at p-value of Rooms, it is .4363
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