Final Exam Questions  ADM2303, ADM5300  Fall 1986
1. Descriptive Statistics
The following Minitab output presents some data and its
manipulation for different Canadian Treasury Bills purchased in
1986.
All values are given in dollars.
Be sure to explain
your work in enough detail that the marker can understand what
you have done.
Point form explanations are acceptable.
a) Using the information given, draw the empirical probability
distribution for percentage return on investment.
b) What is the probability a TBill returns under 8% from this
distribution? Show briefly how you get this result.
c) What is the modality of the empirical distribution?
d) How should the average return on investment be calculated?
Is there only one possible average return on investment?
Explain briefly?
e) What is the mean of the percentage return on investment
distribution?
f) What is the average return per dollar invested?
2.
Joe and Nancy both operate milling machines to make car
engine parts for Canadian Tire.
In milling distributor shaft
gears, Joe has been observed to produce 6.5 shafts per hour
with standard deviation of 0.65 shafts per hour.
Nancy has
been observed to produce 7.8 shafts per hour on average with
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 Spring '00
 Phansalker
 Statistics, Normal Distribution, Standard Deviation, Joe Nancy Both

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