12. Archaeology: Pottery Shards of clay vessels were put together to recon- struct rim diameters of the original ceramic vessels found at the Wind Mountain archaeological site (see source in Problem...

#12

Extracted text: 12. Archaeology: Pottery Shards of clay vessels were put together to recon- struct rim diameters of the original ceramic vessels found at the Wind Mountain archaeological site (see source in Problem 11). A random sa of ceramic vessels gave the following rim diameters (in centimeters): 11.7 13.5 17.7 18.1 15.9 13.4 22.1 12.7 13.1 19.6 (a) Use a calculator with mean and sample standard deviation keys to verify that x 15.8 cm and s ~ 3.5 cm. (b) Compute an 80% confidence interval for the population mean µ of rim diameters for such ceramic vessels found at the Wind Mountain archaeological site.