select one ice cream bar from a box containing 12 bars. The box contains four chocolate bars (C), four strawberry bars (S), and four vanilla bars (V). Suppose the two students select their ice cream bars at random. The probability for each possible selection is given in the table below. Bars Selected CC CV CS SC SS SV VC vs VV 4 4 4 1 4 4 4 Probability II 33 33 33 Π 33 33 33 11 Find the expected number of vanilla bars selected.
select one ice cream bar from a box containing 12 bars. The box contains four chocolate bars (C), four strawberry bars (S), and four vanilla bars (V). Suppose the two students select their ice cream bars at random. The probability for each possible selection is given in the table below. Bars Selected CC CV CS SC SS SV VC vs VV 4 4 4 1 4 4 4 Probability II 33 33 33 Π 33 33 33 11 Find the expected number of vanilla bars selected.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...
Question
why the correct answer is letter B?
Transcribed Image Text:As a reward for completing a reading challenge, two elementary school students are allowed to
select one ice cream bar from a box containing 12 bars. The box contains four chocolate bars (C),
four strawberry bars (S), and four vanilla bars (V). Suppose the two students select their ice cream
bars at random. The probability for each possible selection is given in the table below.
Bars Selected CC CV CS SC
Probability
Find the expected number of vanilla bars selected.
4
33
33
SS SV VC VS VV
4
33
3
33
-E
+3
1
Π 33 33 33
4
4
1
(A) bars
(B)
@
6M
bars
bars
19
(D)
bars
(E) 1 bar
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