Question: help and explanation using excel please Timothy is running an ad and wishes to estimate with 90% confidence, the population proportion of those who would

help and explanation using excel please

Timothy is running an ad and wishes to estimate with 90% confidence, the population proportion of those who would support his ad. The estimates must be accurate within 6% of the population proportion. Find the minimum sample size needed if: (a) no preliminary estimate is available and (b) a preliminary estimate gives p-hat as 0.44. c) Compare your results

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