A researcher wanted to compare that activity of pet dogs living in the city and pet dogs living in the suburbs. To test that, he collected a sample of 21 dogs from the city and 21 dogs from the suburbs and measured how long they were active on a random day (in minutes). The mean activity time for the city dogs’ sample was M1 = 116 with a variance of S1 2 = 400. For the suburb dogs’ sample, the mean was M2 = 150 with a variance of S2 2 = 625. a. Which test should be used to analyze the dat

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
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Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
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A researcher wanted to compare that activity of pet dogs living in the city and pet
dogs living in the suburbs. To test that, he collected a sample of 21 dogs from the city
and 21 dogs from the suburbs and measured how long they were active on a random
day (in minutes). The mean activity time for the city dogs’ sample was M1 = 116 with a
variance of S1
2 = 400. For the suburb dogs’ sample, the mean was M2 = 150 with a
variance of S2
2 = 625.
a. Which test should be used to analyze the data? 

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