Table 5.13 shows the observed pollution indexes of air samples in two areas of a city. Test
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Table 5.13 shows the observed pollution indexes of air samples in two areas of a city. Test the hypothesis that the mean pollution indexes are the same for the two areas. (Use α = 0.05.)
Table 5.13 Data for Exercise 3 Area A Area B 2.92 1.84 1.88 0.95 5.35 4.26 3.81 3.18 4.69 3.44 4.86 3.69 5.81 4.95 5.55 4.47
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