Jason wants to estimate the percentage of people who sleep for at least seven hours each night. He wants to create a 92 % confidence interval which has an error bound of at most 3 % . How many people should be polled to create the confidence interval? z 0.10 z 0.05 z 0.04 z 0.025 z 0.01 1.282 1.645 1.751 1.960 2.326