We surveyed 48 people in an attempt to determine the proportion of Americans who lease a vehicle. 18 said that they did. What is the 97% confidence interval for the proportion of all Americans who lease a vehicle? Enter your answers accurate to two decimal places. (, ) Can we conclude that the proportion of all Americans who lease a vehicle is more than 0.22? Yes No Not enough information to determine this Beyond representative sampling, what assumptions are needed to satisfy the requirements for this confidence interval? X∼binomial, np≥5 and nq≥5 X∼normal or n≥30 X∼normal and n≥30 X∼binomial and at least 5 successes and failures

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