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10. When conducting a hypothesis test, the hypothesis that illustrates our theory about what is really going on is called the A. research hypothesis. B. null hypothesis. C. alternative hypothesis. D. realistic hypothesis. E. theoretical hypothesis.
5. It is claimed that 7% of American adults do not use the internet. Believing this claimed value is too low, a researcher surveys a random sample of American adults and finds that 9% do not use the internet. When a hypothesis test is conducted, the researcher writes out her alternative hypothesis as "p>0.07." What is wrong with this alternative hypothesis? A. Nothing is wrong. B. The alternative hypothesis should be "p> 7." C. The alternative hypothesis should be "p<0.07." D. The alternative hypothesis should be "p = 0.09." E. We cannot determine what the alternative hypothesis should be without first knowing the significance (or alpha) level. 6. Consider a hypothesis testing situation in which the null hypothesis is p = 0.34 and the alternative is p <0.34. Data is gathered from a random sample, and calculations yield a value of z = -2.7. Which one of the following conclusions should be drawn based on this information? A. The P-value is larger than 0.05. B. The P-value is smaller than 0.01. C. The sample size was too small. D. There is a 2.7% chance the null hypothesis is false. E. A calculation error must have been made since the value of z can never be negative.