Question 1 of 6 1 A random sample of 28 individuals is obtained from a large population known to be approximately normally distributed If the sample mean is observed to be 16 9 and the sample variance is observed to be 8 2 test H0 18 versus the alternative H1 18 using the confidence interval approach at the 0 05 level of significance What is the left endpoint of this interval Round your answer to the nearest hundredths Answer