1. Are the following alternative hypotheses directional or non directional? One- or two tailed?
a. Ha: Students with low verbal ability are more likely to plagiarize than those with high verbal ability.
b. Ha: Psychology majors will exhibit more interpersonal skills in a new situation than students in other majors.
c. Ha: Single adults who use online dating services will differ in a measure of shyness than single adults who do not use online dating services.
d. Ha: Those who report high levels of stress will be more likely to over-eat than those who report low levels of stress.
2. Which alternative hypothesis results in a more stringent test? Explain your answer.