The table contains the numbers of prisoners who died in state custody in2005 for a random sample of 5 states. The sample is drawn from a normal population. State Prisoner deaths New York Pennsylvania Michigan Ohio Georgia 171 149 140 121 122 Using sample's standard deviation, = 20.7677, 2 = 431.3 (a) Find the critical values on Chi-square distribution for 95% confidence interval. (b) Construct the 95% confidence interval for the population variance. (c) Construct the 95% confidence interval for the population standard deviation. (d) What are the units for (b) and (c) above? Which units are more easily understood