An article in Industrial Quality Control (1956 pp. 5-8) describes an experiment

An
article in Industrial Quality Control (1956 pp. 5-8) describes an experiment
to investigate the effect of glass type(Effect A) and phosphor type
(Effect B) on the brightness of a television tube. The response measured is the
current necessary (in micro-amps) to obtain a specified brightness level. The
date are shown in the table below. Analyze the data and draw conclusions. (60
pts) Glass TypePhosphor Type12312803002902903102852852952902230260220235240225240235230a.
What are the
value of yi.. y.j. and yij.?b.
What are the
value of SSt SsaSSB SSABand
SsE?c.
What are the
main effect of A and B?d.
What is the interaction
effect AB?e.
Do any these
effect affect brightness level?