SOLUTION: Susan Williams has been the production manager of Medical Suppliers, Inc., for the past 17 years. Medical Suppliers, Inc., is a producer of bandages and arm slings. During the past

Question 609645: Susan Williams has been the production manager of Medical Suppliers, Inc., for the past 17 years. Medical Suppliers, Inc., is a producer of bandages and arm slings. During the past 5 years, the demand for No-Stick bandages has been fairly constant. On the average, sales have been about 87,000 packages of No-Stick. Susan has reason to believe that the distribution of No-Stick follows a normal curve, with a standard deviation of 4,000 packages. What is the probability that sales will be less than 81,000 packages?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Susan Williams has been the production manager of Medical Suppliers, Inc., for the past 17 years. Medical Suppliers, Inc., is a producer of bandages and arm slings. During the past 5 years, the demand for No-Stick bandages has been fairly constant. On the average, sales have been about 87,000 packages of No-Stick. Susan has reason to believe that the distribution of No-Stick follows a normal curve, with a standard deviation of 4,000 packages. What is the probability that sales will be less than 81,000 packages?
----------
z(81000) = (81000-87000)/4000 = -6/4
----
P(x < 81000) = P(z < -3/2) = normalcdf(-100,-3/2) = 0.0668
===============
Cheers,
Stan H.
RELATED QUESTIONS
The manager of a retails store is concerned that his suppliers have been giving him... (answered by Boreal)

The manager of a computer retail store is concerned that his suppliers have been giving... (answered by Theo)

The manager of the Portland Electronics store is concerned that his suppliers have been... (answered by stanbon)

The manager of a computer retails store is concerned that his suppliers have been giving... (answered by Boreal)

. A manufacturer purchases a key component used in the production of their product from... (answered by HeyEv)

A manufacturer purchases a key component used in the production of their product from two (answered by richwmiller)

10. Parts and materials for the skis made by the Downhill Adventures Company are supplied (answered by Theo)