Solve these questions please

We want a 80% confidence interval for the average age of people buried in Durham city cemeteries from 1910 to 1920. We collect the following sample of ages for that era: 60,0,0,41,59,70,23,23,2,28,13 Find the degrees of freedom for this problem: We will use the left edge of the right tail that has area The left edge of this tail is The sample mean is The sample standard deviation is The margin of error is The 80% confidence interval is [ IMPORTANT: This problem is only intended to teach you the procedure for finding a confidence interval for mean. When working this problem, ignore the fact that the sample may be too small and just pretend the procedure for finding a confidence interval works