References Exercise 9-43 (Algo) (Log-1, L09-3) HighTech Incorporated randomly tests its employees about company policies. Last year in the 420 random tests conducted, 18 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 90% condence interval estimate? (Round your answers to 3 decimal places.) i c. Compute the 90% confidence interval for the population proportion. (Round your answers to 3 decimal places.) d. Is it reasonable to conclude that 8% of the employees cannot pass the company policy test? 0 Yes 0 No