values has an approximately normal distribution. 1,229 1,194 1,292 1,229 1,268 1,316 1,275 1,317 1,275 a) Use a calculator with mean
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
1,229 1,194 1,292 1,229 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 four decimal places.)
x= _____ A.D.
s = _____yr
b) When finding an 90% confidence interval, what is the critical value for confidence level? (Give your answer to three decimal places.)
tc =
c) What is the maximal margin of error when finding a 90% confidence interval for the mean of all tree-ring dates from this archaeological site? (Round your answer to the nearest whole number.)
E =
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 4 images
