Engineering, 06.04.2021 21:20 maxi12312345
The average time it takes to repair headphones at a factory repair center is 90 hours with a standard deviation of 10 hours. To monitor this process daily, samples of 15 headphones are taken and the mean time computed. Today, the mean time was 84.5 hours. Suppose a similar sample of 15 headphones was undertaken shortly after the first sample was taken. The mean of both samples would be expected to be the same if the process is in-control.
Answers: 3
Another question on Engineering
Engineering, 04.07.2019 18:10
The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false
Answers: 2
Engineering, 04.07.2019 18:10
Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux
Answers: 3
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 18:10
Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?
Answers: 3
You know the right answer?
The average time it takes to repair headphones at a factory repair center is 90 hours with a standar...
Questions
Mathematics, 18.03.2021 07:40
Mathematics, 18.03.2021 07:40
History, 18.03.2021 07:40
Mathematics, 18.03.2021 07:40
Mathematics, 18.03.2021 07:40
Mathematics, 18.03.2021 07:40
Computers and Technology, 18.03.2021 07:40
Mathematics, 18.03.2021 07:40
Health, 18.03.2021 07:40
Mathematics, 18.03.2021 07:40
Mathematics, 18.03.2021 07:40
History, 18.03.2021 07:40
