Problem 25 Task Assignments How many ways can an adviser choose 4 students from a class of 12 if they are all assigned the same task? How many ways can the students be chosen if they are each given a different task? 495; 11,880 Step-by-Step Solution: Step 1 of 3 QuadraticRelationship - Check the residual plot to determine of the form of model is appropriate QuadraticModel QuadraticModel(2) QuadraticModel NoteExample ConcaveUpward - As price increase the sales volume decrease at a decreasing rate b0= 539242.8 b1= -765344.8 b2= 290156.24 Interpretations b = 539242.8 0 We predicted the sales volume to be 539242.8 when the price of cat food is 0. - This is extrapolation b1= -765344.8 We have no potential interpretation - What if we increase x1 by 1 unit b 2 290156.24 Since b2 is positive, we have a positive concave upward relationship between price and volume of cat food. HypothesisTesting H 0β 20 vs H :a >2 t-test T = 20.23 p-value = Decision: Reject H ,0since p-value is less than the level of significance0.01 Conclusion:we have statically significanceevidence for a concave upward curvature between the sales volume and the price of cat food Step 2 of 3
Recommended textbooks for you MATLAB: An Introduction with Applications Publisher:John Wiley & Sons Inc Probability and Statistics for Engineering and th... Publisher:Cengage Learning Statistics for The Behavioral Sciences (MindTap C... Author:Frederick J Gravetter, Larry B. Wallnau Publisher:Cengage Learning Elementary Statistics: Picturing the World (7th E... Author:Ron Larson, Betsy Farber The Basic Practice of Statistics Author:David S. Moore, William I. Notz, Michael A. Fligner Introduction to the Practice of Statistics Author:David S. Moore, George P. McCabe, Bruce A. Craig MATLAB: An Introduction with Applications ISBN:9781119256830 Author:Amos Gilat Publisher:John Wiley & Sons Inc Probability and Statistics for Engineering and th... ISBN:9781305251809 Author:Jay L. Devore Publisher:Cengage Learning Statistics for The Behavioral Sciences (MindTap C... ISBN:9781305504912 Author:Frederick J Gravetter, Larry B. Wallnau Publisher:Cengage Learning Elementary Statistics: Picturing the World (7th E... ISBN:9780134683416 Author:Ron Larson, Betsy Farber Publisher:PEARSON The Basic Practice of Statistics ISBN:9781319042578 Author:David S. Moore, William I. Notz, Michael A. Fligner Publisher:W. H. Freeman Introduction to the Practice of Statistics ISBN:9781319013387 Author:David S. Moore, George P. McCabe, Bruce A. Craig Publisher:W. H. Freeman |