English as a Second Language The state ofCalifornia monitors the progress of
Chapter 9, Problem 79(choose chapter or problem)
English as a Second Language The state ofCalifornia monitors the progress of elementary-agedstudents whose native language is not English usingthe California English Language Development Test.25The test results for two school districts in RiversideCounty for the 20092010 school year follow. Theproportion given is the proportion of 6th gradestudents judged as Advanced or Early-Advanced inEnglish proficiency.District Riverside Unified Palm SpringsNumber Tested 602 459Proportion .54 .31Does the data provide sufficient evidence to indicate thatthere is a difference in the proportion of students whoare Advanced or Early-Advanced in English proficiencyfor these two school districts? Test using a .01.
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