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In a recent poll of 750 randomly selected adults, 590 said that it is morally wrong to not report all income on tax returns. Use a .01 significance level to test the claim that 75% of adults say that it is morally wrong to not report all income on tax returns. Identify the null hypothesis, alternative hypothesis, test statistic, p-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the {-value method. Use the normal distribution as an approximation of the binomial distribution.
The null and alternative hypothesis are: _____
The test statistic is z=____
The P-value is ____
q1. the ziteck corporation buys parts from international suppliers. one part is currently being purchased from a
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A random sample of 64 light bulbs indicates a sample mean life of 350 hours. At the 0.05 level of significance, is there evidence that the mean life is different from 375 hours?
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Compute test statistic and p -value for each sample. (Negative amount must be pointed out by minus sign.)
Almost all U.S. light-rail systems use electric cars that run on tracks built at street level.According to the Federal Transit Administration, light-rail is one of the safest modes oftravel, with an accident rate of .99 accidents per million passenge..
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