8. An appliance manufacturer wants to contract with a repair shop to handle authorized repairs in Indianapolis. The company has set an acceptable range of repair time of 50 minutes to 90 minutes. Two firms have submitted bids for the work. In test trials, one firm had a mean repair time of 74 minutes with a standard deviation of 4.0 minutes and the other firm had a mean repair time of 72 minutes with a standard deviation of 5.1 minutes. Which firm would you choose? Why?

What is the percentage change in price for a zero coupon bond if the yield changes from 6.56.5% to 5.55.5%? the bond has a face value of $1 comma 0001,000 and it matures in 1010 years. use the price determined from the first yield, 6.56.5%, as the base in the percentage calculation?

At cooly cola, we are testing the appeal of our new diet one cola. in a taste test of 250 randomly chosen cola drinkers, 200 consumers preferred diet one cola to the leading brand. assuming that the sample were large enough, the large-sample 95% confidence interval for the population proportion of cola drinkers that prefer diet one cola would be:

Mountain mouse makes freeze-dried meals for hikers. one of mountain mouse's biggest customers is a sporting goods superstore. every 66 days, mountain mouse checks the inventory level at the superstore and places an order to restock the meals. these meals are delivered by ups in 55 days. average demand during the reorder period and order lead time is 8585 meals, and the standard deviation of demand during this same time period is about 1919 meals.calculate the restocking level for mountain mouse. assume that the superstore wants a 95\% service level. what happens to the restocking level if the superstore wants a higher level of service-say, 99]%? the restocking level for the 95% service level is 117 mealssuppose there are 25 meals in the superstore when mountain mouse checks inventory levels. how many meals should be ordered, assuming a 95% service level?