Every hour 4 transistors are taken at random from a production run, and the resistance of each one is measured (the results are shown below in ohms). Find the upper and lower control limits for thex(using s), s, and R charts.

Ever},F hour 4 transistors are taken at random 'orn a production run, and the resistance of each one is measured (the results are shovm below in oluns). Find the upper and lower control limits for theft {using 3), s, and R charts. \"anlmil 25, 23 22, 22 24, 24 24, 22 23, 23 25, 24 21, 21 22, 22 22 22 23 23 24 24 23 25 22 22 23 23 24 24 24 2O