a$)$ P$(>$ USL$)=$ enter your response here $($round your response to four decimal $$places$).$

$$b$)$ P$(<$ LSL$)=$ enter your response here $($round your response to four decimal $$places$).$

$$c$)$ The annual expected fixing cost of the guitar cords is $$$enter your response here $($round your answer to the nearest$$ dollar$).$

$$d$)$ The annual expected material cost of the guitar cords is $$$enter your response here $($round your answer to the nearest$$ dollar$).$