A doctor believes that the standard deviation of systolic blood pressure is 450. A random sample of 24 patients found a standard deviation of 520. Assume the variable is normally distributed and = 0.01. What are the critical values?
A) 10.196 and 41.638
B) 9.262 and 44.181
C) 9.886 and 45.559
D) 10.856 and 42.980