The Wind Mountain archaeological site is located in southwesternNew Mexico. Wind Mountain was home to an ancient culture ofprehistoric Native Americans called Anasazi. A random sample ofexcavations at Wind Mountain gave the following depths (incentimeters) from present-day surface grade to the location ofsignificant archaeological artifacts†.
| 85 | 45 | 120 | 80 | 75 | 55 | 65 | 60 |
| 65 | 95 | 90 | 70 | 75 | 65 | 68 |
(b) Compute a 98% confidence interval for the mean depthμ at which archaeological artifacts from the Wind Mountainexcavation site can be found. (Round your answers to one decimalplace.)
| lowerlimit    |   cm |
| upperlimit    |   cm |
