Chapter 14 Interval Estimation / Confidence Intervals
Suppose we have the following information. Construct a 95% confidence interval. = 80. σ = 3. n = 10. α = 0.05. Step 1: Find the appropriate z-score. So we want an interval that looks like the following. Graph 1: So we go to the table and find the Z that would give use this and it is z = 1.96. ................
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