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bachelor in business administration
Polytechnic State University Sanluis
Jan-2006 - Nov-2010
CPA
Polytechnic State University
Jan-2012 - Nov-2016
Professor
Harvard Square Academy (HS2)
Mar-2012 - Present
Find z* for each of the confidence levels in parts (a) through (c), and draw a picture similar to Figure 10.4 (p. 382). Then answer part (d).
a. 60%.
b. 86%.
c. 99.8%.
d. On the basis of the values of z* found in parts (a) through (c), explain what happens to the width of the confidence interval when the confidence level is increased.

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