2. 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 in the following table were recorded for the two instruments. Sulfur Monoxide Instrument A Instrument B 0.87 TT 0.86 0.74 0.63 0.82 0.75 0.61 0.55 0.89 0.76 0.64 0.81 0.70 0.69 0.68 0.57 0.65 0.53 Assuming the populations of measurements to be approximately normally distributed, test the hypothesis that OA = OB against the alternative that OA # OB. Use a 0.05 level of significance.
2. 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 in the following table were recorded for the two instruments. Sulfur Monoxide Instrument A Instrument B 0.87 TT 0.86 0.74 0.63 0.82 0.75 0.61 0.55 0.89 0.76 0.64 0.81 0.70 0.69 0.68 0.57 0.65 0.53 Assuming the populations of measurements to be approximately normally distributed, test the hypothesis that OA = OB against the alternative that OA # OB. Use a 0.05 level of significance.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:2. 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 in the following table were recorded for the two instruments.
Sulfur Monoxide
Instrument A Instrument B
0.86
0.87
0.74
0.82
0.75
0.61
0.63
0.55
0.89
0.76
0,64
0.70
0.81
0.69
0.68
0.57
0.65
0.53
Assuming the populations of measurements to be approximately normally distributed,
test the hypothesis that ơA = OB against the alternative that ƠA + OB. Use a 0.05 level of
significance.
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