I need to know the detailed steps involved in solving this (FYI - I use QM for Windows): Defects in marble countertops usually require the whole top...

I need to know the detailed steps involved in solving this (FYI - I use QM for Windows):

Defects in marble countertops usually require the whole top to be remade. In one shop, the percent defective in the past had been 1 %. If a sample size of 30 is taken, what should be the 95.5% upper control limit? Thank you!