Question: 4. Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to a sample of

4.

4. Assume that a sample is used to estimate a population proportion

Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to a sample of size 278 with 245 successes at a confidence level of 95%. E = (report answer as a percent accurate to one decimal place. Do not type the percent sign) Answer should be obtained without any preliminary rounding. However, the critical value za may be rounded to 3 decimal places

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