Suppose, in 23, that there has been some controversy about
Chapter , Problem 27(choose chapter or problem)
Suppose, in 23, that there has been some controversy about the assumption of no interaction between gasoline and additive used. To allow for the possibility of an interaction effect between gasoline and additive, it was decided to run 36 motors4 in each grouping. The following data resulted. Additive Gasoline 1 2 3 1 126.2 130.4 127 124.8 131.6 126.6 125.3 132.5 129.4 127.0 128.6 130.1 2 127.2 142.1 129.5 126.6 132.6 142.6 125.8 128.5 140.5 128.4 131.2 138.7 3 127.1 132.3 125.2 128.3 134.1 123.3 125.1 130.6 122.6 124.9 133.0 120.9 (a) Do the data indicate an interaction effect? (b) Do the gasolines appear to give equal results? (c) Test whether or not there is an additive effect or whether all additives work equally well. (d) What conclusions can you draw?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer