A. The amount of time required for an oil and filter change on an automobile is normally distributed with a mean
of 45 minutes and a standard deviation of 10 minutes. A random sample of 16 cars is selected. 95% of all sample means will fall between what two values?
B. Salmon weights are bell-shaped, with a mean of 12.3 pounds and standard deviation of 2 pounds. According to the Empirical Rule, approximately 95% of all salmon weigh between what two values?