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You have conducted recent tests measuring peak pollution levels in

You have conducted recent tests measuring peak pollution levels in various parts of the city. The average peak pollution readings for a sample of 21 days at each of three city locations are given in the table below, along with sample standard deviations.

Test the hypothesis that the average peak pollution levels for the three populations represented here are the same. Use a significance level of 5%.

Test the hypothesis that the average peak pollution levels for the three populations represented here are the same. Use a significance level of 5%.

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