Title: What is confidence coefficient?
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Asked by: Anselma Carranza
What is confidence coefficient?

Content: Factors affecting the width of the confidence interval include the size of the sample, the confidence level, and the variability in the sample. Basic steps. C
z*
99%
2.576
98%
2.326
95%
1.96
90%
1.645
What do confidence levels mean? Confidence Level. A confidence level refers to the percentage of all possible samples that can be expected to include the true population parameter. For example, suppose all possible samples were selected from the same population, and a confidence interval were computed for each sample.