[Statistics] How do you find the point estimate? The data is given below Pollution Group 40  1 16  1 44  1 47  1 26  1 64  1 35 1  53 1  45 1  52 1  31 1  38 1  44 1  29 1  45 1  47 1 34 2 28 2  36 2  19 2  35 2  37 2 36 2  39 2  32 2 25 2  37 2  40 2  44 2  38 2

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[Statistics] How do you find the point estimate? The data is given below

Pollution Group
40  1
16  1
44  1
47  1
26  1
64  1
35 1 
53 1 
45 1 
52 1 
31 1 
38 1 
44 1 
29 1 
45 1 
47 1
34 2
28 2 
36 2 
19 2 
35 2 
37 2
36 2 
39 2 
32 2
25 2 
37 2 
40 2 
44 2 
38 2

An engineer suspects that a power plant in the city is increasing the air pollution in the vicinity of the plant. A
sample of measurements of carbon monoxide (in mg/m3 of air) in the vicinity of the plant (Group 1) is obtained
for comparison with another sample obtained from other locations (Group 2) in the city.
Dataset is available at pollution.txt
Assuming the populations' variances are equal, find a point estimate for the common variance based on the
samples from both groups.
Note: Please round your answer to four decimal places.
Transcribed Image Text:An engineer suspects that a power plant in the city is increasing the air pollution in the vicinity of the plant. A sample of measurements of carbon monoxide (in mg/m3 of air) in the vicinity of the plant (Group 1) is obtained for comparison with another sample obtained from other locations (Group 2) in the city. Dataset is available at pollution.txt Assuming the populations' variances are equal, find a point estimate for the common variance based on the samples from both groups. Note: Please round your answer to four decimal places.
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