- A large sample confidence interval for the mean age of students at a community college is (21.45, 24.79) years. What is the interval in error notation?
2.A sample of 50 days showed that a fast food restuarant served an average of 182 customers during lunchtime. The sample standard deviation was 8. Find a 96% confidence interval for the average customer count. Put your answers in interval notation. i.e. (a, b) where a is the lower bound and b is the upper bound of the interval. Be sure to round your answers to two decimal places