Part $1.$ What is the difference between a specification limit and a control limit$?$

Part $2.$ A pharmaceutical manufacturer requires between $3$ and $5$ mg of medication in each dose of cancer medication. The mean of the process is $3\mathrm{.}75,$ and the standard deviation is $\mathrm{.}25.$ What is the sigma of this process, and how many doses would be above $5$ mg in $1,000,000$ doses produced? What would this mean for real patients?

Part $3.$ Which pharmaceutical manufacturing process below process is 'capable?$\text{'}$ In other words, which process is a $6$ sigma or better process?

LSL: $3$

USL: $5$

Process $1.$ Mean of $4\mathrm{.}5,$ standard deviation of $\mathrm{.}08$

Process $2.$ Mean of $4,$ standard deviation of $0\mathrm{.}5$