Express the given event in symbols either your math

Express the given event in symbols.
Either your math grade will improve or you will use the Website tonight, but you will not use
it every night.
I
∪
( W
∩
E' )
( I
∪
W' )
∩
E'
( I'
∪
W )
∩
E
I'
∪
( W
∩
E )
( I
∪
W )
∩
E'
6. 1/1 points | Previous AnswersWaneFM6 7.1.041.
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My Notes
Pablo randomly picks three marbles from a bag of eleven marbles ( six
ones, three green ones, and two yellow ones).
How many outcomes are there in the event that Pablo picks one marble of each
color?
red

36
outcomes
7. 1/1 points | Previous AnswersWaneFM6 7.1.043.
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My Notes
The map below shows the percentage change in housing prices from June 2010 to June 2011
in each of nine regions (U.S. Census divisions).
You are choosing a region of the country to move to. Describe the event E that the region
you choose saw a decrease in housing prices of 7% or more.
E = {West South Central, East South Central, Middle Atlantic, New England} E = {Mountain,
West North Central, East North Central, Middle Atlantic, East South Central} E = {East
South Central, Mountain} E = {Pacific, Mountain, South Atlantic} E = {Pacific, Middle
Atlantic, South Atlantic}
8. 1/1 points | Previous AnswersWaneFM6 7.1.049.
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My Notes
The following table shows the results of a survey of authors by a (fictitious) publishing
company. HINT [See Example 5.]
New Authors
Established
Authors
Total

Successful 8 9 17
Unsuccessfu
l
6 9 15
Total 14 18 32
Consider the following events: S : an author is successful; U : an author is unsuccessful; N : an
author is new; and E : an author is established.
Describe the events S
∩
N and S
∪
N in words.
S
∩
N is the event that an author is successful and
new
successful and new
.
S
∪
N is the event that an author is either new or
successful
either new or successful
.
Use the table to compute n ( S
∩
N ) and n ( S
∪
N
n ( S
∩
N ) =
8
8
n ( S
∪
N ) =
23
).
9. 1/1 points | Previous AnswersWaneFM6 7.1.055.
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My Notes
The following table shows the results of a survey of authors by a (fictitious) publishing
company. HINT [See Example 5.]
New Authors
Established
Authors
Total
Successful 4 20 24
Unsuccessfu
l
19 55 74
Total 23 75 98