The local school board has instituted a book rewards program intended to encourage third graders to read more, thereby increasing their scores on a standardized vocabulary test. Nationally, the average score on this exam among third graders is 98. A random sample of 223 local third graders participating in the program scored an average of 104 on the test with a standard deviation of 13.
Conduct a significance test with a=.05 to answer the research question: Is the program working to significantly increase local third graders' vocabulary scores?
STEP ONE
In step one of this significance test, do you have to have a "random sample" or "independent random samples"?
a) a random sample
b) independent random samples
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