You work for Madison Telephone company and are interested in how much households still pay for landline telephone. You collect a random sample of 8 households from Madison and find that the monthly dollar amount spent on landline by each household is: 43, 47, 51, 36, 50 42, 38, 41 37a. You want to compute the 95% confidence interval for μ, the average monthly expenditure for landline telephone service.