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 std dev. = 5.4
System 2: Sample size = 60, Sample mean = 50.2, Sample std dev. = 7.6
a) Yes
b) No