Huff Knight

11/24/2024 · Elementary School

A random sample of 13 health maintenance organizations (HMOs) was selected. For each HMO, the co-payment (in dollars) for a doctor's office visit was recorded. The results are as follows. \( 43,54,40,26,53,52,26,25,28,27,39,39,35 \) Send data to calculator) Send data to Excel: Under the assumption that co-payment amounts are normally distributed, find a \( 99 \% \) confidence interval for the mean co-payment amount in dollars. Glve the lower limit and upper limit of the \( 99 \% \) confidence Interval. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: Upper limit: