direnc

January 16th 2006, 02:50 PM

urgent help plz ı have a question plz solve this:

a process is set to be of six-sigma quality if process mean is at least six standard deviations from the nearest specification assume a normally distributed measurement

a-)if a process mean is centered between the upper and lower specifications at a distance of six standard deviations from each,what is the probability that a product does not meet specifications?using the result that 0.000001 equals one part per million express the answer in parts per million?

b-)because it is difficult to maintain a process mean centered between the specifications,the probability of a product not meeting specifications is often calculated after assuming process shifts.If the process mean positioned as in part (a) shifts upward by 1.5 standadr deviations,what's the probability that a product does not meet specifications?express the answer in parts per million

c-)rework part (b)assume that the process mean is at a distance of three standard deviations and then shifts upward by 1.5 standard deviations

d-)compare the results in (b) and (c) and comment

plz help guys ı need to solve this in 6 hours

a process is set to be of six-sigma quality if process mean is at least six standard deviations from the nearest specification assume a normally distributed measurement

a-)if a process mean is centered between the upper and lower specifications at a distance of six standard deviations from each,what is the probability that a product does not meet specifications?using the result that 0.000001 equals one part per million express the answer in parts per million?

b-)because it is difficult to maintain a process mean centered between the specifications,the probability of a product not meeting specifications is often calculated after assuming process shifts.If the process mean positioned as in part (a) shifts upward by 1.5 standadr deviations,what's the probability that a product does not meet specifications?express the answer in parts per million

c-)rework part (b)assume that the process mean is at a distance of three standard deviations and then shifts upward by 1.5 standard deviations

d-)compare the results in (b) and (c) and comment

plz help guys ı need to solve this in 6 hours