In an air pollution experiment, two types of sensors for measuring the amount of sulfur monoxide in the atmosphere are being compared. The goal is to see if the different types of instruments produce measurements with the same variability. For the instrument, the following readings were taken. Test the null hypothesis with a two-tailed test at the 0.05 level of significance, assuming the population of measurements is generally normally distributed.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter1: Variables, Expressions, And Integers
Section1.5: Adding Integers
Problem 45E
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In an air pollution experiment, two types of sensors for measuring the amount of sulfur monoxide in the atmosphere are being compared. The goal is to see if the different types of instruments produce measurements with the same variability. For the instrument, the following readings were taken. Test the null hypothesis with a two-tailed test at the 0.05 level of significance, assuming the population of measurements is generally normally distributed.
Sulfur Monoxide
Instrument A
Instrument B
0.86
0.87
0.82
0.74
0.75
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:Sulfur Monoxide Instrument A Instrument B 0.86 0.87 0.82 0.74 0.75 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
Formuta
(x, – x,)
(ņ – 1)s; +(n, – 1)s 1 1
n, + -2
or
1- x2
t =
n1
n2
Transcribed Image Text:Formuta (x, – x,) (ņ – 1)s; +(n, – 1)s 1 1 n, + -2 or 1- x2 t = n1 n2
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