2 points Consider the distribution of five-year survival for individuals under 40 who have been diagnosed with lung cancer. This distribution has an unknown population proportion p. In a randomly selected sample of 115 patients, only 9 survive five years. The 95% CI for p has the form (L, U). Compute U.The grades of business statistics are normally distributed with mean 80 and standard deviation 10. Find the grade such that 90% of grades fall below it and 10% fall above it. (The 90th percentile ) O 95.2 O 87.2 O 92.8 99.8 84.9