A bowl contains 5 chips, 3 marked $1 and 2 marked $4. A player draws 2 chips at random and is paid the sum of the values of the chips. The player's expected gain (in $) is:
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2 marksStatisticsRandom variables and standard distributionsExpectation and varianceModerateabout 2 min
DSE 2013 Question 42: Random variables and standard distributions
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A bowl contains 5 chips, 3 marked $1 and 2 marked $4. A player draws 2 chips at random and is paid the sum of the values of the chips. The player's expected gain (in $) is: (A) less than 2 (B) 3 (C) above 3 and less than 4 (D) above 4 and less than 5
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What this question tests
This question is on Expectation and variance, part of Random variables and standard distributions in Statistics.
The mean and spread of a random variable, and how they change under transformations and sums.
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