After graduation, you accept a position as Purchasing Manager for Dockery Manufacturing (how exciting!). You are qualifying a source for leverage items and require a lead time between 18 and 23 days. After examining the supplier’s bid information, you determine their current lead times are normally distributed and have a process mean of 21 days. If the target capability is 1.33, then what maximum standard deviation can the process have to be considered capable? a. 0.50
b. 0.63
c. 0.67
d. 0.75
e. 1.00

Wo firms, a and b, each currently dump 50 tons of chemicals into the local river. the government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. it costs firm a $100 for each ton of pollution that it eliminates before it reaches the river, and it costs firm b $50 for each ton of pollution that it eliminates before it reaches the river. the government gives each firm 20 pollution permits. government officials are not sure whether to allow the firms to buy or sell the pollution permits to each other. what is the total cost of reducing pollution if firms are not allowed to buy and sell pollution permits from each other? what is the total cost of reducing pollution if the firms are allowed to buy and sell permits from each other? a. $3,000; $1,500 b. $4,500; $3,500 c. $4,500; $4,000 d. $4,500; $2,500