Question 16 (5 points) A company wishes to estimate the average amount the customers pay per month. A random sample of 100 customers' bills produced a sample mean of $50. Suppose that the population standard deviation is known and equals $5. a) Find a 95% confidence interval for the population mean payment ( ). The answers below may present approximate values. [48, 52] [49.02. 50.98] [45.23, 55. 54] [1,2]