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OpenStudy (anonymous):
plllleeeaasseee help me solve this problem....Data is available for all 50 states on the percentage of public school students who were at or above the proficient level in mathematics testing in 1996 and 2000. Explain why it is not necessary to use an inference procedure if you want to know if the mean percentage proficient for the 50 states increased from 1996 to 2000.
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