Q1) Susan Williams has been production manager of Medical suppliers, Inc , for past 17 years. Medical suppliers, Inc., is a producer of bandages and arm slings. In the past five years, demand for No- stick bandages has been moderately constant. On average, sales have been about 87,000 packages of No stick. Susan has reason to think that distribution of No- Stick follows normal curve, with standard deviation of 4000 packages. Determine the probability that sales will be less than 81,000 packages?

Q2) Industrial oven utilize to cure sand cores for factory manufacturing engine blocks for small cars is able to maintain fairly constant temperature. Temperature range of oven follows a normal distribution with mean of 450 F and standard deviation of 25F. Leslie Larsen, president of factory, is concerned about large number of defective cores that have been produced in several months. If oven gets hotter than 475F, core is defective. Determine the probability that oven will cause core to be defective? Find out the probability that temperature of oven will range from 460 to 470 F?