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From a random sample of 400 registered voters in one

From a random sample of 400 registered voters in one city, 320 indicated that they would vote in favor of a proposed policy in an upcoming election.

a. Calculate the LCL for a 98% confidence interval estimate for the population proportion in favor of this policy.

b. Calculate the width of a 90% confidence interval estimate for the population proportion in favor of this policy.

a. Calculate the LCL for a 98% confidence interval estimate for the population proportion in favor of this policy.

b. Calculate the width of a 90% confidence interval estimate for the population proportion in favor of this policy.

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