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(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) 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 limit A.D. upper limit A.D.

(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) 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 limit A.D. upper limit A.D.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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. 1,229 1,299 1,215 1,306 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 x̄ and sample standard deviation s. (Round your answers to four decimal places.) x̄ = ____ 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 limit ____ A.D. upper limit ____ A.D.
Transcribed Image Text: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. 1,229 1,299 1,215 1,306 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 x̄ and sample standard deviation s. (Round your answers to four decimal places.) x̄ = ____ 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 limit ____ A.D. upper limit ____ A.D.
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