41912016
Student:
_
Date:
W"""'SQuiz
Instructor:
llina Grantcharova
Course:
Applied Managerial Statistics
Assignment:
Week 5 Quiz
(100)
1.
For the given pair
of
events,
classify
the
two
events as independent or dependent.
Randomly selecting a
city
in Texas
Randomly selecting a county in Texas
Choose the correct answer below.
o
A.
The
two
events are dependent because the occurrence
of
one does not affect the probability of the
occurrence of the other.
o
B.
The
two
events are dependent because the occurrence
of
one affects the probability
of
the occurrence
of the other.
o
C.
The
two
events are independent because the occurrence
of
one does not affect the probability
of
the
occurrence of the other.
o
D.
The
two
events are independent because the occurrence
of
one affects the probability of the
occurrence of the other.
10:
3.2.9
2.
24% of college students
say
they use credit cards because
of
the rewards program. You randomly select 10
college students and
ask
each to name the reason he or she uses credit cards. Find the probability that the
number
of
college students who
say
they use credit cards because
of
the rewards program is (a) exactly
two,
(b)
more than two,
and (c) between
two
and
five
inclusive. If convenient, use technology to find the probabilities.
(a)
P(2)=
(Round to the nearest thousandth as needed.)
(b) P(x > 2) =
(Round to the nearest thousandth as needed.)
(c)
P(2:sx:S5)=
(Round to the nearest thousandth as needed.)
10:
4.2.21
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1112

41912016
W"""'SQuiz
3.
Determine whether the random variable is discrete or continuous.
a.
The time required to download a file from the Intemet.
b.
The amount
of
rain in City
B
during April.
c.
The number
of
people in a restaurant that has a capacity of 100.
d.
The number
of
bald eagles in the country.
e.
The time it takes to fly from City A to City
B.
a.
Is the time required to download a file from the Intemet discrete or continuous?
o
A.
The random variable is continuous.
o
B.
The random variable is discrete.
b.
Is the amount of rain in City
B
during April discrete or continuous?
o
A.
The random variable is continuous.
o
B.
The random variable is discrete.
c.
Is the number of people in a restaurant that has a capacity
of
100 discrete or continuous?
o
A.
The random variable is discrete.
o
B.
The random variable is continuous.