A university conducted a survey of 278278 Sophomore, Junior, and Senior undergra
ID: 3397831 • Letter: A
Question
A university conducted a survey of
278278
Sophomore, Junior, and Senior undergraduate students regarding satisfaction with student government. Results of the survey are shown in the table by class rank.
Sophomore
Junior
Senior
Total
Satisfied
5252
6868
6060
180180
Neutral
1616
1616
99
4141
Not satisfied
1818
1515
2424
5757
Total
8686
9999
9393
278278
A survey participant is selected at random. What is the probability that he or she is a
SeniorSenior
or
satisfiedsatisfied?
The probability that a randomly chosen participant is a
SeniorSenior
or
satisfiedsatisfied
is
nothing.
(Round to three decimal places as needed.)
Sophomore
Junior
Senior
Total
Satisfied
5252
6868
6060
180180
Neutral
1616
1616
99
4141
Not satisfied
1818
1515
2424
5757
Total
8686
9999
9393
278278
Explanation / Answer
Probability that he or she is a senior that satisfied=(6060/9323)+((99/9323)/2)=0.65+0.005=0.6555.
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