In a public opinion poll, if the sample size was increased, the sampling error would If the sample size was decreased, the sampling error would [Select] [Select] If the expected proportion changed from 50/50 to 70/30, the sampling error would [Select] expected proportion changed from 50/50 to 30/70, the sampling error would [Select] simple random sample was replaced by a stratified sample the sampling error would [Select] If the If a > T L