Compute the I and J components of the two-factor interaction in Problem 9-1. Problem 9-1. The effects

Question:

Compute the I and J components of the two-factor interaction in Problem 9-1.

Problem 9-1.

The effects of developer strength (A) and development time (B) on the density of photographic plate film are being studied. Three strengths and three times are used, and four replicates of a 32 factorial experiment are run. The data from this experiment follow. Analyze the data using the standard methods for factorial experiments.

Development Time (minutes) Developer Strength 10 14 18 1 2 1 3 2 5 4 4 2 4 6 2 4 6 8 9. 10 7 5 7 7 8 5 7 10 10 10 12 10 8 7 8 7 9 8