1. Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample size of 373 with 178 successes. Enter your answer as an open-interval( i.e., parentheses) using decimals (not percents) accurate to three decimal plases.
C.I.= __________
2. Assume that a sample is used to estimate a population proportion proportion p. Find the 90% confidence interval for a sample of size 151 with 90% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals( not percents) accurate to three decimal places.
C.I.=___________
3. Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample size 373 with 174 successes. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places.
_______

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