At Burnt Mesa Pueblo, the method of tree-ring dating gave the following years A.D. for an archaeological excavation site (Bandelier Archaeological Excavation Project: Summer 1990 Excavations at Burnt Mesa Pueblo, edited by Kohler, Washington State University):

(a) Use a calculator with mean and sample standard deviation keys to verify that the sample mean year is ‰ˆ 1272, with sample standard deviation s ‰ˆ 37 years.
(b) Find a 90% confidence interval for the mean of all tree-ring dates from this archaeological site.
(c) What does the confidence interval mean in the context of this problem?

Transcribed Image Text:

1189 127 1267 1272 1268 1316 1275 1317 1275