Quiz 1

1. QM 520 SP2025 V
2. Week Two: Discrete and Continuous Probability Distributions
3. Quiz #1

Question 1
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Question text
The starting salaries of individuals with an MBA degree are normally distributed
with a mean of $40,000 and a standard deviation of $5,000. What is the
probability that a randomly selected individual with an MBA degree will get a
starting salary of at most $47,500?
Question 1Select one:
A.
0.0668
B.
0.9332
C.
0.4332
D.
0.4499
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The correct answer is: 0.9332

Question 2
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Question text
The time required to produce each tire on an assembly line is best described as
which type of data:
Question 2Select one:
A.
nominal
B.
ordinal
C.
interval
D.
ratio

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The correct answer is: ratio

Question 3
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What is the graphical descriptive representation of the counts of observations
grouped within pre-specified classes called?
Question 3Select one:
a.
Empirical distribution
b.
Histogram
c.
Frequency distribution
d.
All of the above
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The correct answer is: Histogram

Question 4
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Question text
Kurtosis measures which of the following?
Question 4Select one:
a.
central tendency
b.
skewness
c.
the peakedness of a distribution
d.
dispersion
0.7408
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The correct answer is: the peakedness of a distribution