Question: thank you for the extra help I really need to understand how to do these not just the answer. Find the minimum sample size n

thank you for the extra help I really need to understand how to do these not just the answer.

Find the minimum sample size n needed to estimate " for the given values of C , o , and E . C = 0. 95, 0 = 9. 4, and E = 2 Assume that a preliminary sample has at least 30 members . n = ( Round up to the nearest whole number . )

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