Physics, 02.03.2021 05:00 droidd133

MC Qu. 82 A design engineer wants to construct a sample... 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 470If he uses upper and lower control limits of 520 and 480 hours, what is his risk (alpha) of concluding servicelife is out of control when it is actually under control (Type I error)? A. 0.0026B. 0.0456C. 0.3174D. 0.6826E. 0.9544

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 23:10

Estimate of the number of stars in our galaxy

Answers: 1

Answer

Physics, 23.06.2019 00:30

Diego kicks a soccer ball from the end line. his fellow students time and mark the soccer ball as it moves down the field. the graph represents the ball's progress. based on the graph, during what time is the velocity constant and positive?

Answers: 1

Answer

Physics, 23.06.2019 02:00

Elements that have one valence electron and are very reactive are called

Answers: 1

Answer

Physics, 23.06.2019 07:30

An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?

Answers: 3

Answer

You know the right answer?

MC Qu. 82 A design engineer wants to construct a sample... A design engineer wants to construct a sa...

Questions