2. An experiment is required to estimate the standard deviation of a process to within ±20% of its true value with 95% confidence, i.e. a confidence interval for the population standard deviation of the following form is required: P(s(1 − 8) < σ < s(1+8)) = 0.95 where s will be determined from the sample data. Calculate the sample size for the experiment assuming that the distribution is normal.
2. An experiment is required to estimate the standard deviation of a process to within ±20% of its true value with 95% confidence, i.e. a confidence interval for the population standard deviation of the following form is required: P(s(1 − 8) < σ < s(1+8)) = 0.95 where s will be determined from the sample data. Calculate the sample size for the experiment assuming that the distribution is normal.
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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