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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.
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).
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MATH 333 Matrix Algebra and Complex Variables
Homework 5
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Note: show full steps to get full credit. 1. Consider function f (z) = z 3
.
(a) Use the definition of derivatives to calculate the derivative of f ,
the result should be a function
of z.