normal distribution. Tullowing years A.D. for an archaeological excavation site. Assume that the population of x values has an approximately 1313 1187 1313 1187 1268 1316 1275 1317 1275 (a) Perform a descriptive statistic calculation to find the sample mean and standard deviation (to the nearest year). x 1272 s 52 (b) Find a 99% confidence interval for the mean of all tree ring dates from this archaeological site. (Round to nearest integer.) lower limit 1316.65 upper limit 1227.35 MY NOTES PREVIOUS ANSWERS 214 PRints! DETAILS How much do wild mountain lions weigh? Adult wild mountain lions (18 months or older) captured and released for the first time in the San Andres Mountains gave the following welghts (pounds). Assume that the population of x values has an approximately normal distribution, 100 94 70 60 64 109 devlation, (Enter your answers to one decimal place)

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