DETAILS MENDSTATC4 10.E.057. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A random sample of n - 11 observations was selected from a normal population. The sample mean and variance were x = 3.92 and s = 0.3214. Find a 90% confidence interval for the population variance of (Round your answers to three decimal places.) You may need to use the appropriate appendix table or technology to answer this question. Need Help? Read it