An implantable defibrillator is a small unit that senses erratic heart signals from a patient. If the signal does not normalize within a few seconds, the unit charges itself to 650 V and delivers a powerful shock to the patient’s heart, restoring the normal beat. The quality control department of the manufacturer of these defibrillators is responsible for checking the output voltage of these assembled devices. To check the variability of the voltmeters, the department performed a designed experiment, measuring each of eight units twice. The data collected are as follows:

(a) Perform an analysis of variance to determine if there is a significant difference in the units used in this study.

(b) Find

(c) What percentage of the total variability is due to the voltmeter?
Comment on your results.

Transcribed Image Text:

Measurement 1 Measurement 2 640.9 650.6 644.2 647.1 659.9 654.4 656.2 648.3 646.6 652.1 656.3 647.0 659.6 655.8 657.8 651.8