A design engineer measured the service life of a halogen headlamp his company produces. On three recent production batch
Posted: Mon May 30, 2022 5:29 pm
A design engineer measured the service life of a halogen
headlamp his company produces. On three recent production batches,
he tested service life on random samples of four headlamps each.
sample Service life (hours) 1 525 515 505 655 2 555 575 610 400 3
590 580 450 600 If the design engineer uses an LCL of 8 and UCL of
24 for the range control chart, which sample will be out of
control? Sample 2 and 3 Sample 3 None of the other choices are
correct Sample 1 and 2 All samples are out of control
headlamp his company produces. On three recent production batches,
he tested service life on random samples of four headlamps each.
sample Service life (hours) 1 525 515 505 655 2 555 575 610 400 3
590 580 450 600 If the design engineer uses an LCL of 8 and UCL of
24 for the range control chart, which sample will be out of
control? Sample 2 and 3 Sample 3 None of the other choices are
correct Sample 1 and 2 All samples are out of control