Construct a 90% confidence interval for the population variance.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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JANUARY 2018
16. A precision instrument is guaranteed to read accurately with a standard deviation
of 2 units. A sample of 4 instrument readings on the same object yielded the
measurements of 453, 451, 451 and 455 units. Assume that the data are normally
distributed.
Construct a 90% confidence interval for the population variance. [1.408,31.255]
Transcribed Image Text:JANUARY 2018 16. A precision instrument is guaranteed to read accurately with a standard deviation of 2 units. A sample of 4 instrument readings on the same object yielded the measurements of 453, 451, 451 and 455 units. Assume that the data are normally distributed. Construct a 90% confidence interval for the population variance. [1.408,31.255]
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