Two types of instruments for measuring the amount of sulfur

Two types of instruments for measuring the amount of sulfur

Two types of instruments for measuring the amount of sulfur monoxide in the atmosphere are being compared in an air-pollution experiment. It is desired to determine whether the two types of instruments yield measurements having the same variability. The following readings were recorded for the two instruments. Assuming the populations of measurements to be approximately normally distributed, test the hypothesis that s A = a B against the alternative that CT.-I ?s B. Use a P-value.

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