the hypothesis that o_A^2=o_B^2 against o_A^2#o_B^2 at a level of significance a=0.05. Does this mean that one instrument is more reliable than the other? Or are they equally accurate?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Two types of instruments for measuring the amount of sulfur monoxide in the atmosphere are being
compared in an air-pollution experiment. Researchers wish to determine whether the two types of
instruments yield measurements having the same variability. The readings were recorded for the two
instruments. Assuming the populations of measurements to be approximately normally distributed, test
the hypothesis that o_A^2=0_B^2 against o_A*2#0_B^2 at a level of significance a=0.05. Does this mean
that one instrument is more reliable than the other? Or are they equally accurate?
Sulfur Monoxide
Instrument A
0.86
Instrument B
0.87
0.82
0.75
0.74
0.63
0.61
0.55
0.89
0.76
0.64
0.70
0.81
0.69
0.68
0.57
0.65
0.53
Transcribed Image Text:Two types of instruments for measuring the amount of sulfur monoxide in the atmosphere are being compared in an air-pollution experiment. Researchers wish to determine whether the two types of instruments yield measurements having the same variability. The readings were recorded for the two instruments. Assuming the populations of measurements to be approximately normally distributed, test the hypothesis that o_A^2=0_B^2 against o_A*2#0_B^2 at a level of significance a=0.05. Does this mean that one instrument is more reliable than the other? Or are they equally accurate? Sulfur Monoxide Instrument A 0.86 Instrument B 0.87 0.82 0.75 0.74 0.63 0.61 0.55 0.89 0.76 0.64 0.70 0.81 0.69 0.68 0.57 0.65 0.53
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