(Answered) Question civic engagement the hyde park neighborhood

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Question: Civic Engagement The Hyde Park Neighborhood Association Outreach Committee recently conducted a survey to learn more about the issues and concerns of the residents. In a random sample of 124 residents, 20 indicated that the main barrier to involvement in community events is scheduling conflicts.30

a. Find a 90% confidence interval for the true proportion of residents who believe the main barrier to involvement in community events is scheduling conflicts.

b. Suppose no prior estimate of p^{^} is known. How large a sample is necessary for the bound on the error of estimation to be 0.04 with confidence level 90%?

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