Mathematics, 12.11.2020 17:10, hellicuh
A design engineer wants to construct a sample mean chart for controlling the service life of a halogen headlamp his company produces. He knows from numerous previous samples that this service life is normally distributed with a mean of 500 hours and a standard deviation of 20 hours. On three recent production batches, he tested service life on random samples of four headlamps, with these results: Sample Service Life (hours) 1 495 500 505 500 2 525 515 505 515 3 470 480 460 470 If he uses upper and lower control limits of 520 and 480 hours, on what sample(s) (if any) does service life appear to be out of control?
Answers: 1
Mathematics, 21.06.2019 15:40, AM28
Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?
Answers: 1
Mathematics, 21.06.2019 17:30, lizzy2951
Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?
Answers: 2
Mathematics, 21.06.2019 21:30, GreenHerbz206
Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.
Answers: 2
Mathematics, 21.06.2019 22:00, natetheman7740
Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.
Answers: 2
A design engineer wants to construct a sample mean chart for controlling the service life of a halog...
Chemistry, 13.11.2020 08:30
Computers and Technology, 13.11.2020 08:30
History, 13.11.2020 08:30
Biology, 13.11.2020 08:30