Question 18 (5 points) A company wished to estimate the average amount customers pay per month. A random sample of 100 customers' bills produced a
Question 18 (5 points) A company wished to estimate the average amount customers pay per month. A random sample of 100 customers' bills produced a sample mean of $50 and a sample standard deviation of $5. c) Find a 95% confidence interval for the population mean. The answers below may present approximate values. O [48, 52] [48.01, 50.99] [49.01, 50.99] O [49.02, 50.98]
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