What are some quality issues that you could imagine facing in relation to this specific Apple product?

what is cp vs cpk, gage rr, p value, how to run t-test, reject Ho, tell me something the biggest technical challenges you solved (7 times), why apple, walk me through apple, why doing this times 7, and how you measure cmm vs OMM, whats the surface profile, bilateral vs unilateral , what is the maximum material condition and why, why run out, what if tolerence stack up and why why why, how to run DOE and root sum square , give me an example you use chi-square test to solve quality issue,? give me an example you use ANOVA test to solve quality issue,? When to use run chart vs control chart and why why why, what is stratification chart and how

Difference between Cp and CpK?