Question

2 Additive Manufacturing 3D printing is a growing trend in the manufacturing industry, with several factories and makers using this technology to quickly produce prototypes or replacement parts. 3D printing comes in different forms and uses different types of materials. One disadvantage to 3D printing is its relatively slow processing time, which makes it difficult to use for mass production of items Your family business has recently decided to purchase a high quality 3D printer to explore a new business opportunity making spare parts for bicycle shops. You would like to predict how long t wil take to 3D print a part based on the computed volume of the design given to you. You decide that a regression model is the best way to predict printing times. Volume of spare part (Cubic inches) Printing time (minutes / part) 2 10.844 30.74 7.728 31.976 4.208 8.518 24.463 4.025 5.388 27.008 10.054 7.432 10.706 16.864 5.9 0.5 1.3 0.5 0.8 5.1 1.9 2.9 . What is the P value for your part size estimate? Write your answer as a number with at least three decials. If it is less than.00, you may write ".

Answer 1

Regression Equation

printing time

=

1.170 + 5.306 Volume of spare part

Coefficients

Term	Coef	SE Coef	T-Value	P-Value	VIF
Constant	1.170	0.379	3.09	0.009
Volume of spare part	5.306	0.124	42.93	0.000	1.00

we see that the P value of estimate of volume of spare part size is 0.