The average age of hospital inpatients has gradually increased to 52.5 years. Studies of two major health care systems found the following information. At the 0.05 level of significance is there sufficient evidence to conclude a difference between the two variances? System 1 Sample size 60 Sample mean 49.8 Sample Standard deviation. 5.4 and System 2 sample size 60 Sample mean 50.2 Sample Standard deviation 7.6