Check my work Pharmaceutical companies promote their prescription drugs using television advertising. In a survey of 75 randomly sampled television viewers, 12 indicated that they asked their physician about using a prescription drug they saw advertised on TV. a. What is the point estimate of the population proportion? (Round your answers to 1 decimal places.) Point estimate of the population proportion % es b. What is the margin of error for a 90% confidence interval estimate? (Round "z-scores" and round your final answers to 2 decimal places.) Margin of error c. Compute the 90% confidence interval for the population proportion. (Round "z-scores" to 2 decimal places and round your answers to 3 decimal places.) Confidence interval for the proportion mean is between and