IOE 265 – Fall 07
September 20, 2007
Note:
Please make sure you type in your answers in the spaces provided and submit this file
electronically via the CTools website under Assignments.
Save this file as ‘
uniqname
_lab_2’
with your own uniqname.
1.
On your own, name three examples of a discrete random
variable: (1 point)
2.
Pretend you are rolling a pair of fair dice (meaning each face turning up is equally likely);
however, these are not standard dice.
One of the dice has 10 faces (number 1 through 10),
and the other has only 4 faces (numbered 1 through 4).
What is the probability of the two dice totaling 8 on a given roll? (1 point)
Now, in the box below, paste a histogram (from either Excel or Minitab) that displays the
probability of rolling any value between 2 and 14. Comment briefly on the shape of this
distribution: (1 point)
Lab 2: Random Number Distributions
Section 1: Examples of Discrete Random Variables
1.
Measurements of a digital instrument that displays the current to the nearest
onehundredth of a milliampere
2.
A voice communication system containing 48 external lines
3.
Number of nonzero digits in a randomly selected zip code.
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 Spring '07
 Jin
 Standard Deviation, Probability distribution, Probability theory, Randomness, CDF

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