As a researcher for an environmental agency, you have been asked to determine if the air qualityin the Philippines has changed over the past 2 years. You select a random sample of 7metropolitan cities and find the number of days each year that these cities failed to meetacceptable air quality standards. The results were given below. Can we conclude that after ayear, there is no improvement in the air quality in the Philippines? Use o=0.15.City1234567Year 1284792230324Year 236651323443812a. In words, define the random variable X1b. Ho:.c. Ha:d. The level of significance ise. Determine the test statistic using the data (show solution).f. Provide the decision rule of the test.g. Decision:h. Write a clear conclusion. You may use the sample format:and X2 sufficient evidence to reject the null hypothesis that at < _% level of significance>.

Name: As a researcher for an environmental agency, you have been asked to d
Uploaded: 2024-03-20T07:07:00.000Z
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Description: As a researcher for an environmental agency, you have been asked to determine if the air qualityin the Philippines has changed over the past 2 years. You select a random sample of 7metropolitan cities and find the number of days each year that these

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As a researcher for an environmental agency, you have been asked to determine if the air quality in the Philippines has changed over the past 2 years. You select a random sample of 7 metropolitan cities and find the number of days each year that these cities failed to meet acceptable air quality standards. The results were given below. Can we conclude that after a year, there is no improvement in the air quality in the Philippines? Use a=0.15. City 1 2 3 5 6 4 7 Year 1 28 47 9 22 30 32 4 Year 2 36 65 13 23 44 38 12 a. In words, define the random variable X1 b. Но с. На: d. The level of significance is e. Determine the test statistic using the data (show solution). f. Provide the decision rule of the test. and X2 =