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Unformatted text preview: confidence interval if it is reasonable to presume that the proportion of these sampled who play hooky will be somewhere between 0.1 and 0.3. Section 8.5 Large-sample test of hypothesis for a population proportion Example Of the 2512 U.S. adults who were asked whether they believed that juries “almost always” convict the guilty and free the innocent, only 578 said that they did. (a) At the 5% significance level, do the data provide sufficient evidence to conclude that less than one in four Americans believe that juries “almost always” convict the guilty and free the innocent? (z = -2.30) (b) Find the p-value and assess the strength of the evidence against the null hypothesis....
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- Spring '08
- Macroeconomics, Statistical hypothesis testing, 5%, population proportion Example