1. According to an article in the San Gabriel Valley Tribune, "Most people are kissing the 'right way.'" That is, according to the study, the majority of couples tilt their heads to the right when kissing. In the study, a researcher observed 124 couples kissing in various public places and found that 83 of the couples tilted their heads to the right. Does this study provide convincing evidence that couples really do prefer to kiss the "right way"?
   1. If couples have no directional preference when kissing, how often would you expect to see a couple kiss the "right way"?
   2. State the null and alternative hypotheses.
   3. Describe the evidence for the alternative hypothesis and provide two explanations for this evidence.
   4. Describe how to use a spinner to simulate the number of couples that would kiss the right way, assuming that they don't have a preference for either direction.
   5. The graph on the previous page shows the number of couples who tilted to the right in 100 simulated samples of 124 couples, assuming couples don't have a directional preference. How often was the simulated number of couples who tilted to the right the same or greater than in the actual sample?
   6. Based on your answer to the previous question, is there convincing evidence that couples prefer to kiss the "right way?" Explain.