Question: Basic Computation: Sample Size What is the minimal sample size needed for a 95% confi dence interval to have a maximal margin of error of

Basic Computation: Sample Size What is the minimal sample size needed for a 95% confi dence interval to have a maximal margin of error of 0.1

(a) if a preliminary estimate for p is 0.25?

(b) if there is no preliminary estimate for p?

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