5.30. An experiment was performed to investigate the keyboard feel on a computer (crisp or mushy) and the size of the keys (small, medium, or large). The response variable is typing speed. Three replicates of the experiment were performed.

The experimental design and the data are as follow.

(a) Analyze the data from this experiment.

(b) Investigate model adequacy by constructing appropriate residual plots.

(c) What conclusions can you draw?

Transcribed Image Text:

Keyboard Feel Key Size Mushy Crisp Small 31, 33, 35 36, 40, 41 Medium 36, 35, 33 40, 41, 42 Large 37, 34, 33 38, 36, 39