HighTech Incorporated randomly tests its employees about company policies. Last year in the 470 random tests conducted, 28 employees failed the test.


a. What is the point estimate of the population proportion that failed the test? (Round your answers to 1 decimal places.)


b. What is the margin of error for a 95% confidence interval estimate? (Round "z-scores" to 2 decimal places and round your answers to 3 decimal places.)


c. Compute the 95% confidence interval for the population proportion. (Round "z-scores" to 2 decimal places and round your answers to 3 decimal places.)