6. 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 Year 1 Year 2 1 18 24 2 50 77 3 13 4 22 21 5 30 44 6 29 23 7 1 6

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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6. 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
= 0.15.
quality in the Philippines? Use a =
City
Year 1
Year 2
1
18
24
2
50
77
3
9
13
4
22
21
5
30
44
6
29
23
7
1
6
Transcribed Image Text:6. 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 = 0.15. quality in the Philippines? Use a = City Year 1 Year 2 1 18 24 2 50 77 3 9 13 4 22 21 5 30 44 6 29 23 7 1 6
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