Three different brands of magnetron tubes (key components in
microwave ovens) were stress tested and the number of hours each
operated without repair was recorded (see table). Although these
times do not represent typical service life times, they do indicate
how well these tubes can withstand extreme stresses.
Prove that the mean duration with effort is the same for all
three brands. What assumptions are necessary for the validity of
this procedure?
Using a suitable test, determine if there is evidence to
conclude that magnetron tube brands tend to differ in duration with
stress using an α of .05.
Using a programmed
Three Different Brands Of Magnetron Tubes Key Components In Microwave Ovens Were Stress Tested And The Number Of Hours 1 (23.3 KiB) Viewed 37 times
Marca A 36 48 5 67 53 Marca B 49 33 60 2 55 Marca C 71 31 140 59 42
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