7. On paper. A precision instrument is guaranteed to read accurately to within 2 units. A sample of four instrument readings on the same object yielded the measurements 353, 351, 351, and 355. 1. Test the null hypothesis that σ = 0.7 against the alternative σ > 0.7. Use α = 0.05. 2. Find a 90% confidence interval for the population variance.

7. On paper. A precision instrument is guaranteed to read accurately to within 2 units. A sample of four instrument readings on the same object yielded the measurements 353, 351, 351, and 355. 1. Test the null hypothesis that σ = 0.7 against the alternative σ > 0.7. Use α = 0.05. 2. Find 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

Section: Chapter Questions

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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