10.19 Of a random sample of 455 high-quality investment equity options, 203 had less than 30% debt....
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10.19 Of a random sample of 455 high-quality investment equity options, 203 had less than 30% debt. Of an independent random sample of 205 high-risk investment equity options, 183 had less than 30% debt. Test, against a two-sided alternative, the null hypothesis that the two population proportions are equal.
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Related Book For 
Essential Mathematics And Statistics For Science
ISBN: 9780470694480
2nd Edition
Authors: Graham Currell, Dr. Antony Dowman
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