Question

3)  In a public opinion poll, approximately 85% of Americans felt that

having a police officer on patrol in the neighborhood made them safer than having no police officer on patrol. The margin of error reported was 3%. Construct an interval estimate using these figures.

Answer  

4)  

For each of the following confidence levels, look up the critical z values for a two-tailed test.  

4a)  90% (Hint: 5% in each tail): 

Work: 

4b)  95%  (Hint: 2.5% in each tail):

Work:  

5)

Remembering that a meta-analysis calculates one mean effect size using the effect sizes of several studies, assume you are conducting a meta-analysis over a set of five studies. The effect sizes for each study are: d= .65, d = .19, d = .42, d = .08, d = .70

5a)  Calculate the mean effect size of these studies. 

5b)  Use Cohen’s conventions to describe the mean effect size you calculated in part (a).        

Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"