Attached is the process capability report from Minitab. It is obtained for airline service $($say$,$

East$-$West Airlines$).$ Go through it critically and answer the following questions:

a$.$ What is the specification limits$?$

b$.$ Calculate the natural tolerance limits$.$

c$.$ What is your opinion about the process? Give compelling reasons.

d$.$ If you feel that the process is producing non$-$conforming items, then what is the

proportion of non$-$conforming items is produced? Use the normal distribution concept

and calculate $Z1$ and $Z2$ values.

e$.$ Use the six sigma conversion table in the slides. What is the sigma level of the

process?

f$.$ If you feel that the process has to be improved, what will you do$?$

$(1+2+2+3+1+2=11M)$