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 1,292 1,180 1,236 1,229 1,306 1,278 (a) Find the sample mean year x and sample standard deviation s. (Round your answers to four decimal places.) A.D. yr x = USE SALT S= (b) When finding an 86% confidence interval, what is the critical value for confidence level? (Give your answer to three decimal places.) t₁ = What is the maximal margin of error when finding a 86% confidence interval for the mean of all tree-ring dates from this archaeological site? (Round your answer to the nearest whole number.) E= Find a 86% 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.
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 1,292 1,180 1,236 1,229 1,306 1,278 (a) Find the sample mean year x and sample standard deviation s. (Round your answers to four decimal places.) A.D. yr x = USE SALT S= (b) When finding an 86% confidence interval, what is the critical value for confidence level? (Give your answer to three decimal places.) t₁ = What is the maximal margin of error when finding a 86% confidence interval for the mean of all tree-ring dates from this archaeological site? (Round your answer to the nearest whole number.) E= Find a 86% 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
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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
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 1,292 1,180 1,236 1,229 1,306 1,278
(a) Find the sample mean year x and sample standard deviation s. (Round your answers to four decimal places.)
A.D.
X =
S=
USE SALT
=
yr
(b) When finding an 86% confidence interval, what is the critical value for confidence level? (Give your answer to three decimal places.)
tc²
What is the maximal margin of error when finding a 86% confidence interval for the mean of all tree-ring dates from this archaeological site? (Round your answer to the nearest whole number.)
E =
Find a 86% 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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