1
Final Exam 2 May 14, 1997, Quant II Form A
The 40 exam questions and answer sheet are both to be turned in to your Discussion Section
instructor at the end of the exam. Code your name and ID number on the answer sheet. Code your
Section number under OPTIONAL CODES in positions L M N.
1. Consider 4 Bernoulli trials with success probability π = 0.2. What is the probability of
observing at least one success?
A) 4(0.2)1(0.8)3
B) (0.8)4
C) 1 − (0.8)4
D)
E) 4(0.2)
2. If a process is in control (stable), the process is expected to produce goods or services that
meet the customers expectations.
A) True B) False
3. In the multiple regression example in the British Steel video, they were using two continuous
predictor variables, amount of carbon in the steel plate and amount of carbon in the welding
wires, to predict the amount of carbon in the final weld. Their regression model is best
described as
A) one line
B) two parallel lines
C) one quadratic curve
D) a plane
E) a quadratic surface
4. A simple random sample of size 100 is selected from the population of Fortune 500
companies. (There are exactly 500 of these companies.) The variable sampled has a
population mean of $50,000 and a standard deviation of $3,000. What is the standard error of
the sample mean?
A) 240
B) 268
C) 300
D) 3000
E) Cannot be determined from the information given.
5. Control charts reflect both the cross-sectional and longitudinal aspects of a process.
A) True B) False
6. A parameter is a numerical characteristic of a sample.
A) True B) False
4 0.2
()
0.8
()
