How do i work out this problem A major research organization conducted national survey to find out what percent of Americans feel that they are more or less likely to become crime victim now than they were five years ago. Asking 1,200 randomly chosen respondents if their feeling of safety had enhanced over the past five years, 45% reported that they feel less safe.
a. Determine the standard error of proportion.
b. Determine the 95% confidence interval for population proportion.
c. Determine the 99% confidence interval for population proportion.