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Practice Test 2
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1.
A probability distribution showing the probability of x successes in n trials, where the probability of success
does not change from trial to trial, is termed a
a.
uniform probability distribution
b.
binomial probability distribution
c.
hypergeometric probability distribution
d.
normal probability distribution
____
2.
A continuous random variable may assume
a.
any value in an interval or collection of intervals
b.
only integer values in an interval or collection of intervals
c.
only fractional values in an interval or collection of intervals
d.
only the positive integer values in an interval
Exhibit 51
The following represents the probability distribution for the daily demand of microcomputers at a local store.
Demand
Probability
0
0.1
1
0.2
2
0.3
3
0.2
4
0.2
____
3.
Refer to Exhibit 51. The expected daily demand is
a.
1.0
b.
2.2
c.
2, since it has the highest probability
d.
of course 4, since it is the largest demand level
____
4.
In the textile industry, a manufacturer is interested in the number of blemishes or flaws occurring in each 100
feet of material. The probability distribution that has the greatest chance of applying to this situation is the
a.
normal distribution
b.
binomial distribution
c.
Poisson distribution
d.
uniform distribution
____
5.
Which of the following is
not
a characteristic of an experiment where the binomial probability distribution is
applicable?
a.
the experiment has a sequence of n identical trials
b.
exactly two outcomes are possible on each trial
c.
the trials are dependent
d.
the probabilities of the outcomes do not change from one trial to another
____
6.
The hypergeometric probability distribution is identical to
1
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the Poisson probability distribution
b.
the binomial probability distribution
c.
the normal distribution
d.
None of these alternatives is correct.
____
7.
In a binomial experiment the probability of success is 0.06. What is the probability of two successes in seven
trials?
a.
0.0036
b.
0.06
c.
0.0554
d.
0.28
____
8.
For a uniform probability density function,
a.
the height of the function can not be larger than one
b.
the height of the function is the same for each value of x
c.
the height of the function is different for various values of x
d.
the height of the function decreases as x increases
____
9.
The probability density function for a uniform distribution ranging between 2 and 6 is
a.
4
b.
undefined
c.
any positive value
d.
0.25
____
10.
A continuous probability distribution that is useful in describing the time, or space, between occurrences of an
event is a(n)
a.
normal probability distribution
b.
uniform probability distribution
c.
exponential probability distribution
d.
Poisson probability distribution
____
11.
Larger values of the standard deviation result in a normal curve that is
a.
shifted to the right
b.
shifted to the left
c.
narrower and more peaked
d.
wider and flatter
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This note was uploaded on 12/04/2011 for the course ACCT 3311 taught by Professor Smith during the Spring '10 term at University of the Incarnate Word.
 Spring '10
 smith
 Accounting

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