J
jal8712
Ok so i was given this question. I just am getting lost cause it doesnt say a mean. Does this mean i have to calculate the mean
Elle Tire Company recently bought a new compressor which automatically fills automotive tires to specified pressure. It was specified by the compressor manufacturer that standard deviation for the fillings was 2 PSI. For getting best fuel economy, it is suggested the tire pressures should be set in the range 30 to 35 PSI. Since under inflation is lot more undesirable than over inflation, the manager set the compressor to fill the tires at 33.5 PSI. Answer the following questions-
What is the process capability of the system for filling tires?
so what i did is take
33.5-30/3*2 or 35-33.5/3*2
.5833 or .25
to get these values. Am i doing this right?
Or do i have to find the mean and use the 30 and 35 number than divide by 2?
i am assuming the lsl=30 and usl=35?
most problems we are given had like 10+-3 so we could identity the lsl and usl by that. and the mean was always given to us
Elle Tire Company recently bought a new compressor which automatically fills automotive tires to specified pressure. It was specified by the compressor manufacturer that standard deviation for the fillings was 2 PSI. For getting best fuel economy, it is suggested the tire pressures should be set in the range 30 to 35 PSI. Since under inflation is lot more undesirable than over inflation, the manager set the compressor to fill the tires at 33.5 PSI. Answer the following questions-
What is the process capability of the system for filling tires?
so what i did is take
33.5-30/3*2 or 35-33.5/3*2
.5833 or .25
to get these values. Am i doing this right?
Or do i have to find the mean and use the 30 and 35 number than divide by 2?
i am assuming the lsl=30 and usl=35?
most problems we are given had like 10+-3 so we could identity the lsl and usl by that. and the mean was always given to us