#03

Find the critical value z_c necessary to form a confidence interval at the level of confidence shown below.

c=0.85

z_c= ______ (round to two decimal places as needed)

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#04

Find the margin of error for the given values of c, , and n.

c=0.90,

=2.2,

n=36

E= ________ (round to three decimal places as needed)