Unformatted text preview: per 100ml) of patients seen in diabetes clinic over the past 10 years. Determine the number of records the physician should examine in order to obtain a 90 percent confidence interval for μ if the desired width of the interval is 6 units and a pilot sample yields a variance of 60 . 6.7.4. For multiple sclerosis patients we wish to estimate the mean age at which the disease was first diagnosed. We want a 95 percent confidence interval that is 10 years wide. If the population variance is 90 , how large should the sample be?...
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 Spring '05
 Kzaer
 Statistics, Biostatistics, Normal Distribution, Standard Deviation, Variance, percent confidence interval

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