Chapter 12 Problem # 25.docx - Chapter 12 Problem 25 x = 71...

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Chapter 12 Problem # 25 x = 71 s = 17 n = 25 Percentage z Data Value 20.00% -.8 4 71-.84(17) = 56.72 40.00% -.2 5 71-.84(17) = 66.75 60.00% .25 71-.84(17) = 75.25 80.00% .84 71-.84(17) = 85.28 Interval Observed Frequency Expected Frequency less than 56.72 7 5 56.72 - 66.75 7 5 66.75 – 75.25 1 5 75.25 - 85.28 1 5 85.28 up 9 5 X2 = 11.20 Degrees of Freedom = 5 - 2 - 1 = 2
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