Every week, alex receives $15 allowance from his parents. he usually spends most of it buying candy. in alex's favorite candy store, m&m's are sold in bulk at $5 per pound, and skittles are sold at $3 per pound. let x and y denote the weight of m&m's and skittles alex buys, respectively. let the joint probability density function for ( x, y ) be

Q3. loral corporation manufactures parts for an aircraft company. it uses a computerized numerical controlled (cnc) machining center to produce a specific part that has a design (nominal) target of 1.275 inches with tolerances of ± 0.020 inch. the cnc process that manufactures these parts has a mean of 1.285 inches and a standard deviation of 0.005 inch. compute the process capability ratio and process capability index, and comment on the overall capability of the process to meet the design specifications.