math 1280 Final Exam 2025 COMPREHENSIVE
EXAM QUESTIONS WITH DETAILED VERIFIED
AND 100% CORRECT ANSWERS BRAND NEW
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You are interested in the b
number of English-
speaking people on the
planet who want to play
a new kind of online
video game. You asked
300 college students if
they were interested in
playing video games, 100
said yes, and of them 20
preferred your game to
an existing game that is
widely used. How many
people were in the
sample?
Select one: a. The
number of English-
speaking people on the
planet who want to play
a new kind of online
video game. b. 300 c. 200
d. 100 e. 20
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, 5/5/25, 8:46 PM math 1280 Final Exam 2025 COMPREHENSIVE EXAM QUESTIONS WITH DETAILED VERIFIED AND 100% CORRECT ANS…
What is the mean of x? x b
<- c(12, 14, 11, 14, 13, 15, 12,
16, 10)
Select one: a. 12 b. 13 c. 14
d. 15 e. 16
Using the value of x from e
the prior question, what
is the standard deviation
of x?
Select one: a. 1 b. 3.75 c.
9 d. sqrt(13) e. 1.94
There was a very short b
quiz with five questions.
The following table
shows the number of
correct answers and the
cumulative relative
frequency for those
scores in the class. value:
2 3 4 5 cumulative
relative frequency: .13 .55
.925 1 What is the
probability that a
randomly selected
student from the class
scored a 3 on the short
quiz?
Select one: a. .13 b. .42 c.
.55 d. .375 e. .925
Use this information for
the next three questions.
A random variable called
L is defined by the
following table, but one
of the relative
frequencies is missing:
value: -5 0 1 3 8 relative
frequency: .17 .11 .23 .15
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