To assess the precision of a laboratory scale, we measure a block known to have a mass of 1 gram. We measure the block n times and record the mean ??̅of the measurements. Suppose the scale readings are normally distributed with unknown mean μ and standard deviation σ= 0.001 g. How large should n be so that a 95% confidence interval for μ has a margin of error of ± 0.0001? A. 20 B. 385 C. 10,000 D. 66,358 E. 384
To assess the precision of a laboratory scale, we measure a block known to have a mass of 1 gram. We measure the block n times and record the mean ??̅of the measurements. Suppose the scale readings are normally distributed with unknown mean μ and standard deviation σ= 0.001 g. How large should n be so that a 95% confidence interval for μ has a margin of error of ± 0.0001? A. 20 B. 385 C. 10,000 D. 66,358 E. 384
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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To assess the precision of a laboratory scale, we measure a block known to have a mass of 1 gram. We measure the block n times and record the mean ??̅of the measurements. Suppose the scale readings are normally distributed with unknown mean μ and standard deviation σ= 0.001 g. How large should n be so that a 95% confidence interval for μ has a margin of error of ± 0.0001?
A. 20
B. 385
C. 10,000
D. 66,358
E. 384
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