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# Suppose we have a bag with 10 slips of paper in it. Eight slips have a 3 on them and the other two have a 9 on them.

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Suppose we have a bag with 10  slips of paper in it. Eight slips have a 3 on them and the other two have a 9 on them.

a) What is the expected value of the number shown when we draw a single slip of paper?

b) What is the expected value of the number shown if we add one additional  to the bag?

c) What is the expected value of the number shown if we add two additional 's (instead of just one) to the bag?

Jun 18, 2020

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b) What is the expected value of the number shown if we add one additional 9 to the bag?

c) What is the expected value of the number shown if we add two additional 9's (instead of just one) to the bag?

Forgot the numbers sorry

Jun 18, 2020
#2
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a) 3 because the possibility to draw a 3 is 80% and 80%>20%

Jun 18, 2020
#3
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b) Hint: Find the possibilities by first finding the fraction then convert to a percent to compare.(same thingcfor (c))

Jun 18, 2020
edited by imdumb  Jun 18, 2020
#4
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expected value is a predicted value of a variable, calculated as the sum of all possible values each multiplied by the probability of its occurrence.

Jun 18, 2020
#5
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I tried answering the question before I went here and put in 3 and it was wrong.

Jun 18, 2020