Find the critical value zc necessary to form a confidence interval at the given level of confidence.
Question: Find the critical value zc necessary to form a confidence interval at the given level of confidence. (References: definition for level of confidence page 311, end of section exercises 5 – 8 on page 317) (2 points each)
a. 90%b. 85%
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Deliverables: Word Document
Deliverables: Word Document
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