4. A machine produces nails whose lengths are normally distributed with mean u cm and standard deviation o cm. A sample of of 50 nails is selected and the length of each nail, x cm, is measured. The sample data is summarised as follows: Σ-3)-5, Σ-3,-425 Write a 98% confidence interval for µ.

4. A machine produces nails whose lengths are normally distributed with mean u cm and standard deviation o cm. A sample of of 50 nails is selected and the length of each nail, x cm, is measured. The sample data is summarised as follows: Σ-3)-5, Σ-3,-425 Write a 98% confidence interval for µ.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A machine produces nails whose lengths are normally distributed with mean µ cm and
4.
standard deviation o cm. A sample of of 50 nails is selected and the length of each nail, x cm,
is measured. The sample data is summarised as follows:
Σ-3)-45, Σ-3,- 45
Write a 98% confidence interval for u.

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