For: "The diameter of optical fibre produced by a manufacturer is known to be normally distributed, with a mean of .502mm and standard deviation of .0025mm. The specification requires that the diameter of the fibre be equal to .5mm (plus or minus) .005mm. What proportion of the manufacturer's production will fail to meet the specification?" : Do you create a normal distribution curve? For: "The diameter of optical fibre produced by a manufacturer is known to be normally distributed, with a mean of .502mm and standard deviation of .0025mm. The specification requires that the diameter of the fibre be equal to .5mm (plus or minus) .005mm. What proportion of the manufacturer's production will fail to meet the specification?" : Do you create a normal distribution curve? @Mathematics

8 years agoits known to be normally distributed, so yeah, id make a curve

8 years agoThen just find the probability of the outer?

8 years agolooks like it to me, but thats just a hunch

8 years agofind zscores and probs for .505; and .495

8 years agothank you

8 years agoi gotta wonder tho since its asks for proportion instead of probability; its basiclly the same steps tho

8 years agoIt's just trying to be complex

8 years ago:) prolly lol

8 years agonah

8 years ago