Question
The method of tree-ring dating gave the following years A.D. for an archaeological excavation site. Assume...
The method of tree-ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population of x values has an approximately normal distribution. 1,194 1,180 1,264 1,250 1,268 1,316 1,275 1,317 1,275 (a) Use a calculator with mean and standard deviation keys to find the sample mean year x and sample standard deviation s. (Round your answers to the nearest whole number.) x = 1260 Correct: Your answer is correct. A.D. s = yr (b) Find a 90% confidence interval for the mean of all tree-ring dates from this archaeological site. (Round your answers to the nearest whole number.) lower limitA.D. upper limit A.D.
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