A textile company weaves a fabric on a large number of looms. Four looms selected at random from those available, and four observations of the tensile strength of fabric woven on each of these looms are available (there is no significance to the order of the observations from each of the looms), and the resulting data are as follows: 

Estimate the means for each of the looms, the overall mean, the variance of observations from the same loom, and the variance of means from different looms in the population.

Transcribed Image Text:

Loom 1 2 3 4 98 91 96 95 Observations 99 93 97 99 97 90 95 96 96 92 95 98