6. A sample of certain observations selected from a normally distributed population produced a sample variance of 38. Construct a 98% confidence interval for the population variance for each of the following cases and comment on the intervals as the sample size increases. (а) п — 12 (b) п — 16 (c) n = 20 (а) п — 12

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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6. A sample of certain observations selected from a normally distributed population produced a sample
variance of 38. Construct a 98% confidence interval for the population variance for each of the
following cases and comment on the intervals as the sample size increases.
(а) п — 12
(b) п — 16
(c) n = 20
(а) п — 12
Transcribed Image Text:6. A sample of certain observations selected from a normally distributed population produced a sample variance of 38. Construct a 98% confidence interval for the population variance for each of the following cases and comment on the intervals as the sample size increases. (а) п — 12 (b) п — 16 (c) n = 20 (а) п — 12
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