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If there are 150 students in 9th grade Spanish class, and 45 of them answer Item X on the test correctly, what is the difficulty

If there are 150 students in 9th grade Spanish class, and 45 of them answer Item X on the test correctly, what is the difficulty value of that item?

QUESTION 5 If there are 150 students in 9th grade Spanish class, and 45 of them answer Item X on the test correctly, what is the difficulty value of that item? O-.30 O.30 O -.70 O.70

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