11.7 A study is made of the number of parts assembled as a function of the time spend on the job.

Twelve employees are divided into three groups, assigned to three time intervals, with the following results:

Fit the model by the method of least squares.

Transcribed Image Text:

Time x 10 minutes Number of Parts Assembled y 27, 32, 26, 34 15 minutes 35, 30, 42, 47 20 minutes 45, 50, 52, 49