oldQuiz1-2004

# oldQuiz1-2004 - 50 100 200 probability of demand 0.4 0.3...

This preview shows pages 1–2. Sign up to view the full content.

Department of Chemical Engineering University of California, Santa Barbara Ch.E. 132C Winter, 2004 Quiz 1 1. (35 points) A company receives a shipment of 1000 items. The company’s quality inspection strategy is as follows. Two items are selected at random and inspected. If no defectives are found, the shipment is accepted. If two defectives are found, the shipment is rejected and returned. If one defective is found, a new sample of one item is selected and inspected. If it is defective, the shipment is rejected; otherwise, it is accepted. What is the probability of accepting a shipment if 4% of the items are actually defective? 2. (30 points) A small bakery produces rolls that sell at \$0.50 each. The expected demand is summarized as: demand for rolls:

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 50 100 200 probability of demand: 0.4 0.3 0.3 The cost of producing each roll is \$0.10. a. (15 points) What is the expected daily profit? b. (15 points) What is the standard deviation for the daily profit? 2 3. (35 points) An expensive liquid ingredient for a batch process is available from two different suppliers, A and B. Past experience has indicated that the quality variable X for each ingredient is normally distributed with the following means and standard deviations: Supplier Mean Standard deviation A 95% 1% B 94% 0.5% Suppose that a random bottle of the ingredient is selected for each supplier. What is the probability that the difference in the quality variables for the two bottles is greater than 3%? THE END...
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

oldQuiz1-2004 - 50 100 200 probability of demand 0.4 0.3...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online