recaibrating the production machine, the manager randomly selects 20 pirtons and delemines that the standard devation is 0.0027 inch is there significant evidence for the manager to conclue that the standard beviaton has dectased at the α=0.10 sevel of signifiance? What wre the conect hypoheses for thit test? The null hypothesis is H G
: The altemative hypothesis is H 4