1.In the criminal justice system, a defendant is innocent untilproven guilty.Therefore, the nully hypothesis is: \" This person isinnocent.”

a.In this case, what would be the Type I error?

b.In this case what would be the Type II error?

c.What do you think is the more costly error?

2.Suppose a researcher comes up with a new drug that in factcures AIDS.She assigns some AIDS patients to receive a placebo, andothers to receive the new drug.The null hypothesis is that the drugwill have no effect.

a.In this case, what would be the Type I error?

b.In this case, what would be the Type II error?

c.Which do you think would be the more costly error?

3.A manufacturing company is making smoke detectors.They want toconduct a study to determine how well the smoke detectors work.Thenull hypothesis in this study is that the smoke detectors will notwork.

a.In this case, what would be the Type I error?

b.In this case, what would be the Type II error?

c.In this case what would be the more costly error?

4.Much research has found that men tend to perceive moresexuality in women's behavior than women intend (e.g., Abbey,1982).Haselton and Buss (2000) argue that men seem to be operatingfrom the null hypothesis: that women (especially women they areinterested in) are generally behaving in a sexual manner.

a.Is men misperceiving women's sexuality an example of a Type Ior Type II error?

b.Which would be the more costly error for men?Why?

5.A researcher review whether scores on a final review areinfluenced by whether background music is soft, loud, orabsent.

a.What is the independent variable?

b.Is the independent variable manipulated or notmanipulated?

c.How many levels are there for the independent variable?

d.What is the dependent variable?

e.What is the scale of measurement for the dependentvariable?

6.A researcher compares freshmen, sophomores, juniors, andseniors with respect to how much fun they have while attendingcollege (1= no fun at all, 7 = maximum amount of fun).

a.What is the independent variable?

b.Is the independent variable manipulated or notmanipulated?

c.How many levels are there for the independent variable?

d.What is the dependent variable?

e.What is the scale of measurement for the dependentvariable?

7.A researcher examines whether length of daily exposure to asun lamp (0 minutes, 30 minutes, or 60 minutes) influencesself-reported depression (measured as either \"depressed” or \"notdepressed”).

a.What is the independent variable?

b.Is the independent variable manipulated or notmanipulated?

c.How many levels are there for the independent variable?

d.What is the dependent variable?

e.What is the scale of measurement for the dependentvariable?