The statistical difference between a process operating at a 5 sigma level and a process operating at a 6 sigma level is markedly different when it comes to the number of defects present

True

Step-by-step explanation:

A six sigma level has a lower and upper specification limits between and . It means that the probability of finding no defects in a process is, considering 12 significant figures, for values symmetrically covered for standard deviations from the mean of a normal distribution:

For those with defects operating at a 6 sigma level, the probability is:

Similarly, for finding no defects in a 5 sigma level, we have:

.

The probability of defects is:

Well, the defects present in a six sigma level and a five sigma level are, respectively:

Then, comparing both fractions, we can confirm that a 6 sigma level is markedly different when it comes to the number of defects present:

[1]

[2]

Comparing [1] and [2], a six sigma process has 2 defects per billion opportunities, whereas a five sigma process has 600 defects per billion opportunities.

Going south means you're going in the negative direction along the y axis

Going 4 yards south would be represented as -4 on the y axis number line (this is the vertical number line)