A study wishes to see whether attending prekindergarden affects a child's likelihood to graduate high school. Out if 250 randomly selected students who attended Pre-K,  215 eventually graduated high school, while 260 out of 340 students who did not atted Pre-K graduated.   Can we say that the percentage of Pre-K who graduated high school is significantly higher than the percentage of students who did not attend Pre-K?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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ISBN:9780547587776
Author:HOLT MCDOUGAL
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A study wishes to see whether attending prekindergarden affects a child's likelihood to graduate high school. Out if 250 randomly selected students who attended Pre-K,  215 eventually graduated high school, while 260 out of 340 students who did not atted Pre-K graduated.

 

Can we say that the percentage of Pre-K who graduated high school is significantly higher than the percentage of students who did not attend Pre-K?

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