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Express the Confidence Interval in the form of xbar +-E

Express the Confidence Interval in the form of xbar +-E

Given Information:

Z interval: (291.67, 543.11)
xbar = 417.39
n=98

Choose correct confidence interval:

a) 417.39 +- 291.67
b) 417.39+-125.72

Why?

Solution Summary

In this solution, we are given a confidence interval expressed as z-scores and must convert it to the form xbar +-E. Calculation details and explanation provided.

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