Uppose you are trying to estimate the average amount you can drive your car on one tank of gas. Every time you fill up your gas tank you reset your odometer and when the empty light comes on your record how many miles you had driven since you filled up the tank. You do this n=22 times, and from your data you calculate a sample mean of 347 and a sample standard deviation of 44. (round your answers to 3 decimal places)

The parameter we are interested in estimating is