Random Samples of Persons Living in Urban and Suburban Areas

Multiple Choice

Random samples of persons living in urban and suburban areas have been given a scale that measures their support for gun control. Persons residing in urban areas average 10.2 with a standard deviation of 5.3. Persons residing in suburban areas also average 10.2, but the standard deviation is 1.8. What is the appropriate way to deal with these results?

A) Do not conduct any tests: because the sample means are the same value, these results cannot be significant.
B) Test the difference in the sample means for statistical significance.
C) Use a test of significance with a very high alpha level (á > 0.10) .
D) Use a one-tailed test of significance.