The standard deviation in the pressure required to open a certain valve is known to be o = 0.7 psi. Due to changes in the manufacturing process, the quality control manager feels that the pressure variability has been reduced. Determine the null and alternative hypotheses. O Ho : o = 0. 7 Ha: o<0.7 O Ho : o = 0. 7 Ha: o>0.7 O Ho : o = 0. 7 H : σ0. 7 O Ho : o< 0. 7 Ha: o<0.7

The standard deviation in the pressure required to open a certain valve is known to be o = 0.7 psi. Due to changes in the manufacturing process, the quality control manager feels that the pressure variability has been reduced. Determine the null and alternative hypotheses. O Ho : o = 0. 7 Ha: o<0.7 O Ho : o = 0. 7 Ha: o>0.7 O Ho : o = 0. 7 H : σ0. 7 O Ho : o< 0. 7 Ha: o<0.7

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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Question

The standard deviation in the pressure required to open a certain valve is known to
be o = 0.7 psi. Due to changes in the manufacturing process, the quality control
manager feels that the pressure variability has been reduced. Determine the null and
alternative hypotheses.
O Ho : o = 0. 7
Ha: o<0.7
O Ho : o = 0. 7
Ha: o>0.7
O Ho : o = 0. 7
H : σ+ 0.7
O Ho : o < 0. 7
Ha: o<0.7

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