Exam (elaborations)
Sophia Learning STAT1001: Introduction to Statistics UNIT 3 — MILESTONE 3
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Sophia Learning STAT1001: Introduction to Statistics UNIT 3 — MILESTONE 3 Fall 2024.
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UNIT 3 — MILESTONE 323/27
23/27 that's 85% RETAKE
23 questions were answered correctly.
4 questions were answered incorrectly.
1
●
La'Vonn rolled a die 100 times. His results are
below.
Number Times Rolled
1 18
2 20
3 15
4 17
5 14
6 16
What is the relative frequency for La'Vonn
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, rolling a 3? Answer choices are rounded to the
hundredths place.
0.01
●
0.15
#
0.38
●
0.07
●
RATIONALE
The relative frequency of a 3 is:
CONCEPT
→ Relative Frequency Probability/Empirical
Method
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2
●
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:
, Using this Venn diagram, what is the
probability that event A or event B occurs?
0.60
●
0.22
●
0.42
●
0.78
#
RATIONALE
To find the probability that event A or event B
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, occurs, we can use the following formula for
overlapping events:
The probability of event A is ALL of circle A, or
0.39 + 0.18 = 0.57.
The probability of event B is ALL of circle B, or
0.21 + 0.18 = 0.39.
The probability of event A and B is the
intersection of the Venn diagram, or 0.18.
We can also simply add up all the parts = 0.39
+ 0.18 + 0.21 = 0.78.
CONCEPT
→ "Either/Or" Probability with Venn Diagrams
and Two-Way Tables
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3
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