Samples of Republicans and Democrats have been tested for their level of support for welfare reform and the null hypothesis has been rejected. What may we conclude?
a. The difference is significant, there are differences between the parties on this issue
b. The difference is significant, the parties are the same on this issue
c. The difference is not significant
d. A Type I error has occurred
ANSWER: a
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A sampling interval of 5 was used to select a sample from a population of 1000 . How many elements are to be in the sample?
a. 5 b. 50 c. 100 d. 200 e. 1000
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Indicate whether the statement is true or false.
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Answer the following statement true (T) or false (F)